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Effects of Poly(ethylene- co-glycidyl methacrylate) on the Microstructure, Thermal, Rheological, and Mechanical Properties of Thermotropic Liquid Crystalline Polyester Blends. Polymers (Basel) 2020; 12:polym12092124. [PMID: 32957630 PMCID: PMC7570049 DOI: 10.3390/polym12092124] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 09/14/2020] [Accepted: 09/16/2020] [Indexed: 11/16/2022] Open
Abstract
In this study, a series of thermotropic liquid crystalline polyester (TLCP)-based blends containing 1-30 wt% poly(ethylene-co-glycidyl methacrylate) (PEGMA) were fabricated by masterbatch-assisted melt-compounding. The scanning electron microscopy (SEM) images showed a uniformly dispersed microfibrillar structure for the TLCP component in cryogenically-fractured blends, without any phase-separated domains. The FT-IR spectra showed that the carbonyl stretching bands of TLCP/PEGMA blends shifted to higher wavenumbers, suggesting the presence of specific interactions and/or grafting reactions between carboxyl/hydroxyl groups of TLCP and glycidyl methacrylate groups of PEGMA. Accordingly, the melting and crystallization temperatures of the PEGMA component in the blends were greatly lowered compared to the TLCP component. The thermal decomposition peak temperatures of the PEGMA and TLCP components in the blends were characterized as higher than those of neat PEGMA and neat TLCP, respectively. From the rheological data collected at 300 °C, the shear moduli and complex viscosities for the blend with 30 wt% PEGMA were found to be much higher than those of neat PEGMA, which supports the existence of PEGMA-g-TLCP formed during the melt-compounding. The dynamic mechanical thermal analysis (DMA) analyses demonstrated that the storage moduli of the blends decreased slightly with the PEGMA content up to 3 wt%, increased at the PEGMA content of 5 wt%, and decreased again at PEGMA contents above 7 wt%. The maximum storage moduli for the blend with 5 wt% PEGMA are interpreted to be due to the reinforcing effect of PEGMA-g-TLCP copolymers.
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Yoo TJ, Song BS, Lee YE, Bae BS, Jeong YG. Effects of plasticizer on structures, non-isothermal crystallization, and rheological properties of polyarylates. J Appl Polym Sci 2017. [DOI: 10.1002/app.45704] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Tae Jong Yoo
- Department of Advanced Organic Materials and Textile System Engineering; Chungnam National University; Daejeon 34134 Republic of Korea
| | - Bu Seup Song
- Department of Materials Science and Engineering; Korea Advanced Institute of Science and Technology; Taejon 34141 Republic of Korea
| | - Youn Eung Lee
- Seyang Polymer Co., Ltd; Anseong-si Gyeonggi Republic of Korea
| | - Byeong-Soo Bae
- Department of Materials Science and Engineering; Korea Advanced Institute of Science and Technology; Taejon 34141 Republic of Korea
| | - Young Gyu Jeong
- Department of Advanced Organic Materials and Textile System Engineering; Chungnam National University; Daejeon 34134 Republic of Korea
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Iqbal M, Dingemans TJ. High Tg nematic thermosets: Synthesis, characterization and thermo-mechanical properties. Eur Polym J 2010. [DOI: 10.1016/j.eurpolymj.2010.08.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Kimura T, Kossikhina S, Shimoda T, Ito E, Kawahara M. Structures and Tensile Properties of Magnetically Oriented Liquid Crystalline Copolyesters. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/10587259808045390] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Tsunehisa Kimura
- a Department of Industrial Chemistry , Faculty of Engineering, Tokyo Metropolitan University , 1-1 Minami-ohsawa, Hachioji, Tokyo , 192-0397 , Japan
| | - Svetlana Kossikhina
- a Department of Industrial Chemistry , Faculty of Engineering, Tokyo Metropolitan University , 1-1 Minami-ohsawa, Hachioji, Tokyo , 192-0397 , Japan
| | - Toshiyuki Shimoda
- a Department of Industrial Chemistry , Faculty of Engineering, Tokyo Metropolitan University , 1-1 Minami-ohsawa, Hachioji, Tokyo , 192-0397 , Japan
| | - Eiko Ito
- a Department of Industrial Chemistry , Faculty of Engineering, Tokyo Metropolitan University , 1-1 Minami-ohsawa, Hachioji, Tokyo , 192-0397 , Japan
| | - Masanori Kawahara
- b Department of Mechanical Engineering , Faculty of Engineering, Tokyo Metropolitan University , 1-1 Minami-ohsawa, Hachioji, Tokyo , 192-0397 , Japan
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Kaito A, Kyotani M, Nakayama K. Effects of draw-down ratio and annealing treatment on structure formation in extruded strands of a thermotropic liquid crystalline copolyester. J MACROMOL SCI B 2006. [DOI: 10.1080/00222349508219491] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- A. Kaito
- a National Institute of Materials and Chemical Research 1–1 Higashi , Tsukuba, Ibaraki, 305, Japan
| | - M. Kyotani
- a National Institute of Materials and Chemical Research 1–1 Higashi , Tsukuba, Ibaraki, 305, Japan
| | - K. Nakayama
- a National Institute of Materials and Chemical Research 1–1 Higashi , Tsukuba, Ibaraki, 305, Japan
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Chi Z, Cheng D, Pan X, Fan Z, Bu H, Zheng Y, Yang H, Cheng R. New Observation on Morphology of a Thermotropic Liquid Crystalline Polyesterimide Crystallized at High Temperature. J MACROMOL SCI B 2006. [DOI: 10.1080/00222340500522406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Zhenguo Chi
- a Department of Materials Science , Fudan University , Shanghai, China
| | - Dan Cheng
- a Department of Materials Science , Fudan University , Shanghai, China
| | - Xinwei Pan
- a Department of Materials Science , Fudan University , Shanghai, China
| | - Zhongyong Fan
- a Department of Materials Science , Fudan University , Shanghai, China
| | - Haishan Bu
- a Department of Materials Science , Fudan University , Shanghai, China
| | - Yun Zheng
- b College of Chemistry and Chemical Engineering , Nanjing University , Nanjing, China
| | - Hu Yang
- b College of Chemistry and Chemical Engineering , Nanjing University , Nanjing, China
| | - Rongshi Cheng
- b College of Chemistry and Chemical Engineering , Nanjing University , Nanjing, China
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Sudha J, Pillai C. Synthesis and properties of amphotropic hydrogen bonded liquid crystalline (LC) poly(ester amide)s (PEA): effect of aromatic moieties on LC behavior. POLYMER 2005. [DOI: 10.1016/j.polymer.2005.05.114] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Chi Z, Cheng D, Pan X, Zhang Y, Xu J, Bu H. Thermal transition behaviors in a liquid crystalline polyesterimide. POLYMER 2005. [DOI: 10.1016/j.polymer.2005.03.090] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kossikhina S, Kimura T, Ito E, Kawahara M. Structures and tensile properties of a magnetically and mechanically oriented liquid crystalline copolyester, Xydar. POLYM ENG SCI 2004. [DOI: 10.1002/pen.11682] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Pramoda KP, Chung TS. Crystallization and melting behavior of zenite thermotropic liquid crystalline polymers. POLYM ENG SCI 2004. [DOI: 10.1002/pen.10961] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Chung TS, Cheng M, Pallathadka PK, Goh SH. Thermal analysis of vectra B950 liquid crystal polymer. POLYM ENG SCI 2004. [DOI: 10.1002/pen.11484] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Prasad VS, Pillai CKS. Synthesis, characterization, andin vitro degradation of liquid-crystalline terpolyesters of 4-hydroxyphenylacetic acid/3-(4-hydroxyphenyl)propionic acid with terephthalic acid and 2,6-naphthalene diol. ACTA ACUST UNITED AC 2002. [DOI: 10.1002/pola.10276] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Prasad VS, Pillai CKS. Copolyesters of hydroxyphenylalkanoic acids: Synthesis, properties, andin vitro degradation of poly(4-oxybenzoate-co-4-oxyphenylacetate). ACTA ACUST UNITED AC 2001. [DOI: 10.1002/1099-0518(20010301)39:5<693::aid-pola1041>3.0.co;2-v] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Molecular modelling of the structure of the copolyester prepared from p-hydroxybenzoic acid, biphenol and terephthalic acid. POLYMER 1996. [DOI: 10.1016/0032-3861(96)87292-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Ishaq M, Blackwell J, Chvalun S, Kricheldorf H. X-ray analysis of the structure of wholly aromatic copolyesters with thiophenyl and oxyphenyl side groups. POLYMER 1996. [DOI: 10.1016/0032-3861(96)82918-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Yonetake K, Takahashi A, Masuko T, Murouchi S, Kobayashi T. Structures of wholly aromatic copolyesters composed of 4-hydroxybenzoic acid, biphenol and terephthalic acid: 1. Effects of copolymer composition on thermal properties. POLYMER 1995. [DOI: 10.1016/0032-3861(95)90985-b] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Cheng SZ, Wu Z, Zhang A, Johnson RL, Wu HH. Unit-cell size change of the thermotropic copolyester-TPA/PHQ/PEHQ under different annealing conditions. POLYMER 1990. [DOI: 10.1016/0032-3861(90)90199-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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