1
|
In-situ PMMA modified p-cresol resin-nylon 6 polymer blends and evaluation of their hydrophobic and dielectric properties. JOURNAL OF POLYMER RESEARCH 2018. [DOI: 10.1007/s10965-018-1588-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
2
|
Abstract
It is now accepted that hysteresis loss in sub-surface regions plays a major role in rolling friction; however, its influence upon wear has received little consideration. Similarly, the temperatures generated by frictional heating have been analysed only in terms of those mechanisms of sliding friction that result in heat generation at the surface. It is shown that hysteresis loss can cause significant increases in the sub-surface temperatures of rolling bodies with catastrophic consequences for their wear and damage. This mechanism of failure may apply to a wide range of engineering situations including nylon cams, automobile and aircraft tyres and the fibre-filled supercalender rolls used in paper mills.
Collapse
|
3
|
Dielectric characterization of poly(methyl methacrylate) geometrically confined into mesoporous SiO2glasses. ACTA ACUST UNITED AC 2016. [DOI: 10.1007/s100190000111] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
4
|
Effect of the Dipole–Dipole Interactions in the Molecular Dynamics of Poly(vinylpyrrolidone)-Based Copolymers. Macromolecules 2014. [DOI: 10.1021/ma500800a] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
5
|
|
6
|
Sequential homo-interpenetrating polymer networks of poly(2-hydroxyethyl methacrylate): Synthesis, characterization, and calcium uptake. J Appl Polym Sci 2012. [DOI: 10.1002/app.36824] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
7
|
Local Mobility in Amorphous Pharmaceuticals—Characterization and Implications on Stability. J Pharm Sci 2009; 98:2935-53. [DOI: 10.1002/jps.21728] [Citation(s) in RCA: 175] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
8
|
Polymers from oxacyclobutanes II. The laboratory-scale evaluation of the polymer from 3: 3-bischloromethyloxacyclobutane. ACTA ACUST UNITED AC 2007. [DOI: 10.1002/jctb.5010080310] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
9
|
The influence of structure and other factors on molecular motions in solid polymers from 4°K TO 300°K. ACTA ACUST UNITED AC 2007. [DOI: 10.1002/polc.5070320107] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
10
|
|
11
|
|
12
|
Thermal and mechanical properties of poly(methyl methacrylate) and ethylene vinyl acetate copolymer blends. J Appl Polym Sci 2007. [DOI: 10.1002/app.26696] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
13
|
Application of a new structural theory to polymers. ii. transition states for amorphous polymers and copolymers. J MACROMOL SCI B 2006. [DOI: 10.1080/00222348708248063] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
14
|
|
15
|
Effect of side chain concentration on the intensity and temperature of the low-temperature dispersion of polymethacrylate copolymers. J MACROMOL SCI B 2006. [DOI: 10.1080/00222347108212542] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
16
|
Relaxations of Poly(methyl methacrylate) Probed by Covalently Attached Anthryl Groups. Macromolecules 2004. [DOI: 10.1021/ma049941c] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
17
|
Time-Resolved Emission Spectra of Fluoroprobe and Maleimido-Fluoroprobe before, during, and after Sudden Vitrification of Radiation-Polymerized Methyl Methacrylate. J Phys Chem B 2004. [DOI: 10.1021/jp0366419] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
18
|
An apparatus for the measurement of dynamic mechanical properties of polymers over a wide temperature range. ACTA ACUST UNITED AC 2002. [DOI: 10.1088/0950-7671/32/1/303] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
19
|
On the possibility of detecting slow molecular reorientation in polymers by photon correlation spectroscopy. ACTA ACUST UNITED AC 2002. [DOI: 10.1088/0022-3719/6/3/004] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
20
|
Abstract
The real (G') and imaginary (G") components of the complex modulus have been measured between 0.1 and 100 rad/s in the temperature range of 70--55 degrees C for a mixture of 1% high acyl gellan with 79% glucose syrup, and 79% glucose syrup. The method of reduced variables gave superposed curves of G' and G" as a function of timescale of measurement, which matched the thermal profiles of shear modulus obtained by scanning at the constant rate of 1 degrees C/min. Data of the gellan/co-solute mixture could be analysed in terms of two distinct mechanisms. For the alpha dispersion, G' and G" superposed with the horizontal reduction factor a(T) whose temperature dependence followed an equation of the Williams-Landel-Ferry form. Mechanical spectra of the beta dispersion also superposed with the factor a(T) whose temperature dependence, however, corresponded to a constant energy of activation. Relaxation spectra have been calculated for both dispersions. Those for the alpha mechanism were attributed to the chain backbone motions and the friction coefficient per tetrasaccharide repeat unit in backbone motion was calculated from the extended Rouse theory. When the contribution of the solvent alone was studied, no spectra for the beta dispersion were observed supporting the hypothesis of the dispersion being attributed to the side-chain motions of the acyl groups. The spectra of the beta mechanism were relatively broader than for the alpha dispersion. The relative location of the beta dispersion on the time scale or temperature range was found to be between the alpha dispersion (glass transition region) and the glassy state.
Collapse
|
21
|
|
22
|
Reaction dynamics in glass transition region: Propagating radicals in ultraviolet‐irradiated poly(methyl methacrylate). J Chem Phys 1996. [DOI: 10.1063/1.471666] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
23
|
|
24
|
|
25
|
|
26
|
Dynamic mechanical thermal analysis of dental polymers. I. Heat-cured poly(methyl methacrylate)-based materials. Biomaterials 1989; 10:494-8. [PMID: 2804238 DOI: 10.1016/0142-9612(89)90092-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The visco-elastic characteristics of homogeneous, heterogeneous and fibre-reinforced poly(methyl methacrylate) for use as denture base resins were measured by a dynamic mechanical thermal analyser in the frequency range 0.033-90 Hz. Dynamic Young's modulus of both polyethylene woven yarn and the polyaramid plain fabric-reinforced acrylics showed considerable improvement over the conventional denture base, whereas the carbon fibre-reinforced acrylic produced results lower than expected. From the loss tangent curves of the homogeneous and heterogeneous methacrylates their transition temperatures were recorded and the reciprocals of both the alpha and beta absorption temperatures were plotted against frequency to obtain their respective activation energies.
Collapse
|
27
|
Possible origins of the β-relaxation in poly(methyl methacrylate) and related structures from molecular mechanics calculations. POLYMER 1987. [DOI: 10.1016/0032-3861(87)90206-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
28
|
|
29
|
|
30
|
Analysis of damage profiles in poly(methyl methacrylate) in terms of oxygen diffusion and consumption. Polym Degrad Stab 1986. [DOI: 10.1016/0141-3910(86)90055-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
31
|
|
32
|
|
33
|
|
34
|
|
35
|
Thermally stimulated depolarization currents of tactic polymethyl methacrylates and their mixtures. Colloid Polym Sci 1981. [DOI: 10.1007/bf01524710] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
36
|
Influence of molecular weight on the dynamic mechanical properties of poly(methyl methacrylate). ACTA ACUST UNITED AC 1980. [DOI: 10.1007/bf01909459] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
37
|
|
38
|
|
39
|
Composites formed by interstitial polymerization of vinyl monomers in polyurethane elastomers: 4. Preparation, properties and structure of acrylonitrile and styrene based composites. POLYMER 1974. [DOI: 10.1016/0032-3861(74)90069-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
40
|
Composites formed by interstitial polymerization of vinyl monomers in polyurethane elastomers: 2. Morphology and relaxation processes in methyl methacrylate based composites. POLYMER 1973. [DOI: 10.1016/0032-3861(73)90034-7] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
41
|
|
42
|
Untersuchung des viskoelastischen Verhaltens von Polymethylmethacrylat mit Hilfe von Biegeschwingungen. Colloid Polym Sci 1971. [DOI: 10.1007/bf01501004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
43
|
|
44
|
Studies of the toughness of polycarbonate of bisphenol a in light of its secondary transition. ACTA ACUST UNITED AC 1970. [DOI: 10.1016/0001-8716(70)80002-5] [Citation(s) in RCA: 37] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
45
|
|
46
|
|
47
|
|
48
|
|
49
|
|
50
|
“Rotating frame” proton spin-lattice relaxation measurements of stereoregular polymethymethacrylates. ACTA ACUST UNITED AC 1966. [DOI: 10.1016/0031-9163(66)90214-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|