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From Slow to Fast Self-Healing at Ambient Temperature of High-Modulus Reversible Poly(methacrylate) Networks. Single- and Dual-Dynamics and the Effect of Phase Separation. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01440] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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3
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Thermophysical characterization of a reversible dynamic polymer network based on kinetics and equilibrium of an amorphous furan-maleimide Diels-Alder cycloaddition. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.05.058] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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4
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Thermal behaviour below and inside the glass transition region of a submicron P3HT layer studied by fast scanning chip calorimetry. POLYMER 2016. [DOI: 10.1016/j.polymer.2015.12.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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5
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Influence of the amorphous phase and preceding solution processing on the eutectic behaviour in the state diagram of P3HT : PC61BM determined by rapid heat–cool calorimetry. RSC Adv 2016. [DOI: 10.1039/c6ra20659j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Experimental determination of eutectic state diagrams for organic photovoltaics based on advanced calorimetry highlighting the importance of the amorphous phase.
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Flame retardancy and degradation mechanism of poly(vinyl acetate) in combination with intumescent flame retardants: I. Ammonium poly(phosphate). Polym Degrad Stab 2015. [DOI: 10.1016/j.polymdegradstab.2015.09.024] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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A time dependent DFT study of the efficiency of polymers for organic photovoltaics at the interface with PCBM. RSC Adv 2014. [DOI: 10.1039/c4ra12053a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
In this work an intuitive (TD-DFT) approach was developed to explain the experimental efficiencies seen for organic photovoltaic devices.
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RheoDSC Analysis of Hardening of Semi-Crystalline Polymers during Quiescent Isothermal Crystallization. INT POLYM PROC 2013. [DOI: 10.3139/217.2374] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
The crystallization of semi-crystalline polymers is often analyzed by rheometry and calorimetry. By rheometry the viscosity evolution during crystallization can be followed, whereas from a calorimetric measurement, the evolution of the degree of crystallinity can be calculated. The time evolution of these material properties is valuable input for polymer processing simulation software and in order to combine the data in a reliable manner, hardening curves are used as a characterization tool. Such a hardening curve correlates the relative increase of the viscosity resulting from crystallization, to the advancing degree of crystallinity. In this study, these are extracted from simultaneous measurements on one sample using a RheoDSC device. The RheoDSC technique allows for the direct combination of the rheological and calorimetric signal without the need of combining separate stand-alone measurement results. In this study, isothermal crystallization experiments are used to discuss the benefits of this approach. This will lead to the recommendation that measuring the hardening effect in steady shear measurements at very low shear rates in a direct combined RheoDSC setup is the most reliable method to compile unambiguously a material specific hardening curve for semi-crystalline polymers.
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Time–temperature-transformation (TTT) and temperature–conversion-transformation (TxT) cure diagrams by RheoDSC: Combined rheometry and calorimetry on an epoxy-amine thermoset. REACT FUNCT POLYM 2013. [DOI: 10.1016/j.reactfunctpolym.2012.05.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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12
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Thermal Stability of Poly[2-methoxy-5-(2′-phenylethoxy)-1,4-phenylenevinylene] (MPE-PPV):Fullerene Bulk Heterojunction Solar Cells. Macromolecules 2011. [DOI: 10.1021/ma201911a] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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The thermal degradation of poly(vinyl acetate) and poly(ethylene-co-vinyl acetate), Part II: Modelling the degradation kinetics. Polym Degrad Stab 2008. [DOI: 10.1016/j.polymdegradstab.2008.01.021] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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RheoDSC: a hyphenated technique for the simultaneous measurement of calorimetric and rheological evolutions. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2008; 79:023905. [PMID: 18315314 DOI: 10.1063/1.2838585] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A newly developed hyphenated technique is presented combining an existing rheometer and differential scanning calorimeter into a single experimental setup. Through the development of a fixation accessory for differential scanning calorimeter (DSC) crucibles and a novel rotor, the simultaneous measurement is performed inside the well-controlled thermal environment of a Tzero DSC cell. Hence, the evolution of thermal and flow properties of a material can be simultaneously measured using steady or oscillatory shear measurements and regular or modulated temperature DSC measurements. Along with the construction of a prototype, a validation of the design was performed. The technique offers interesting opportunities for the investigation of flow-induced transitions, for instance, crystallization or phase separation, and provides an asset for high-throughput screening of materials. The potential of the novel technique is demonstrated by two case studies: the chemorheology during the cure of a thermosetting epoxy-amine system and the flow-induced crystallization of syndiotactic polypropylene.
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Non-isothermal elimination process in the solid state of n-alkyl-sulphinyl precursor polymers towards conjugated poly[2-(3′,7′-dimethyloctyloxy)-5-methoxy-1,4-phenylene vinylene] studied with MTDSC and TGA. POLYMER 2006. [DOI: 10.1016/j.polymer.2006.09.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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16
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Isothermal Elimination of n-Alkylsulfinyl OC1C10-PPV Precursor Polymers Studied with FT-IR, UV−Vis, and MTDSC: Kinetics of the Elimination Reaction. Macromolecules 2006. [DOI: 10.1021/ma051727g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Mechanistic modeling of the wall reactions in the pyrolysis of pentachloroethane. INT J CHEM KINET 2002. [DOI: 10.1002/kin.10054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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22
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Phase separation in miscible polymer blends as detected by modulated temperature differential scanning calorimetry. POLYMER 2001. [DOI: 10.1016/s0032-3861(00)00532-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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23
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Flexibilized styrene-N-substituted maleimide copolymers. I. Multiblock copolymers prepared from styrene-maleimide telechelics and polytetrahydrofuran. ACTA ACUST UNITED AC 2000. [DOI: 10.1002/1099-0518(20001001)38:19<3550::aid-pola100>3.0.co;2-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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24
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The use of modulated temperature differential scanning calorimetry for the characterisation of food systems. Int J Pharm 1999; 192:77-84. [PMID: 10572201 DOI: 10.1016/s0378-5173(99)00274-4] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Modulated temperature Differential Scanning Calorimetry (MTDSC) is used to characterise food systems. It is shown that by splitting the total heat flow into reversing (related to heat capacity) and non-reversing contributions, overlapping thermal events can be separated. The combination of excellent sensitivity and high resolution provides more accurate results for weak and/or broad transitions. The thermal transitions of maltotriose, maltohexaose and thermoplastic starch are treated as examples. It is also shown that MTDSC is very useful to follow in situ slow crystallisation processes. These structural changes are detected by measuring the heat capacity in the quasi-isothermal mode. The (quasi-)isothermal crystallisation of pregelatinized waxy corn starch is given as an example.
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The pyrolysis of CCl4 and C2Cl6 in the gas phase. Mechanistic modeling by thermodynamic and kinetic parameter estimation. INT J CHEM KINET 1996. [DOI: 10.1002/(sici)1097-4601(1996)28:1<27::aid-kin4>3.0.co;2-o] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Structure-reactivity correlations for gas-phase thermal Diels-Alder reactions of cyclohexa-1,3-diene with substituted ethenes and reverse reactions. INT J CHEM KINET 1994. [DOI: 10.1002/kin.550260303] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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30
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31
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Selectivity-reactivity correlations for thermal Diels-Alder reactions of cyclohexa-1,3-diene with substituted Ethenes in the gas phase. INT J CHEM KINET 1989. [DOI: 10.1002/kin.550211008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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32
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Pyrolysis of 1,1,1-Trichloroethane in the absence and the presence of added HCl and/or CCl4. INT J CHEM KINET 1989. [DOI: 10.1002/kin.550210708] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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33
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Kinetics, mechanism, and stereochemistry of Diels-Alder reactions of carbonyl-substituted ethenes with cyclohexa-1,3-diene in the gas phase. INT J CHEM KINET 1987. [DOI: 10.1002/kin.550191203] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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34
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Kinetics and mechanism of the thermal reactions ofendo- andexo-5-cyanobicyclo[2.2.2]oct-2-ene and methyl-substituted derivatives in the gas phase. INT J CHEM KINET 1987. [DOI: 10.1002/kin.550191002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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35
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Kinetics, mechanism, and stereochemistry of Diels-Alder reactions of CN-substituted ethenes with cyclohexa-1, 3-diene in the gas phase. INT J CHEM KINET 1987. [DOI: 10.1002/kin.550190407] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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36
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Gas phase kinetic and thermochemical data for endo- and exo-5-monosubstituted bicyclo[2.2.2]Oct-2-Enes. INT J CHEM KINET 1986. [DOI: 10.1002/kin.550180504] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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37
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A biradical calculation model for the thermal dimerization of cyclohexa-1,3-diene in the gas phase. INT J CHEM KINET 1985. [DOI: 10.1002/kin.550170612] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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38
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Trisomy 10p, due to an unusual translocation. JOURNAL DE GENETIQUE HUMAINE 1985; 33:63-6. [PMID: 3981144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A mentally retarded boy with short stature, craniofacial dysmorphia, clubfeet, hypertonia and several other congenital anomalies is described. Chromosome analysis revealed a trisomy 10p, due to a peculiar t(10 ; 14) (p11 ; p12) translocation.
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39
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Kinetics, mechanism, andendo selectivity of Diels-Alder reactions of alkylmonosubstituted ethenes with cyclohexa-1,3-diene in the gas phase. INT J CHEM KINET 1984. [DOI: 10.1002/kin.550160202] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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40
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Kinetics and mechanisms of the reaction of acetylene with cyclohexa-1,3-diene and the decomposition of bicyclo[2.2.2]-octa-2,5-diene in the gas phase. INT J CHEM KINET 1982. [DOI: 10.1002/kin.550140905] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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41
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Kinetics of the thermal reactions of bicyclo[4.2.2]deca-3,7-diene and endo-and exo-5-vinylbicyclo[2.2.2]oct-2-ene in the gas phase. INT J CHEM KINET 1982. [DOI: 10.1002/kin.550140305] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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42
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Kinetics and mechanism of the addition of 1,3-butadiene to cyclohexa-1,3-diene in the gas phase. INT J CHEM KINET 1982. [DOI: 10.1002/kin.550140306] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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43
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Kinetics of the diels-alder addition of ethene to cyclohexa-1,3-diene and its reverse reaction in the gas phase. INT J CHEM KINET 1980. [DOI: 10.1002/kin.550120406] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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44
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Evidence for a diradical intermediate in the Diels-Alder reaction of 2-butene with cyclohexa-1,3-diene. INT J CHEM KINET 1978. [DOI: 10.1002/kin.550101108] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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45
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Thermal dimerization of 1,3-butadiene: Kinetics of the formation ofcis,cis-cycloocta-1,5-diene. INT J CHEM KINET 1977. [DOI: 10.1002/kin.550090211] [Citation(s) in RCA: 35] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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