Crystallinity of side-chain fatty acid containing block copolymers with polyisobutylene segment

被引：0
作者：
Dey A. [1 ]
Mete S. [1 ]
Banerjee S. [1 ]
Haldar U. [2 ]
Rajasekhar T. [2 ]
Srikanth K. [1 ]
Faust R. [2 ]
De P. [1 ]
机构：
[1] Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal, Nadia
[2] Polymer Science Program, Department of Chemistry, University of Massachusetts Lowell, One University Avenue, Lowell, 01854, MA
来源：
European Polymer Journal | 2023年 / 187卷
关键词：
Amorphous polymer; Block copolymer; Crystallinity; Fatty acid; Polyisobutylene (PIB);
D O I：
10.1016/j.eurpolymj.2023.111879
中图分类号：
学科分类号：
摘要：
Block copolymers of polyisobutylene (PIB) with side-chain fatty acid-containing polymethacrylate segment with varying n-alkyl side-chains were synthesized by the combination of living cationic and reversible addition-fragmentation chain transfer (RAFT) polymerizations. Hydroxyl-terminated PIB (PIB-OH) was converted into macro-chain transfer agent (PIB-CDP macro-CTA) and used during the RAFT polymerization of fatty ester methacrylate (FEMA) monomers to obtain the block copolymers. Block copolymers were characterized by 1H NMR spectroscopy, size exclusion chromatography (SEC), and thermogravimetric analysis (TGA). The block copolymers showed varied crystalline behaviour depending on the chain length of the fatty acids in the polymethacrylate segment, confirmed by differential scanning calorimetry (DSC), small-angle X-ray scattering (SAXS), wide-angle X-ray scattering (WAXS), polarized optical microscopy (POM), and transmission electron microscopy (TEM). SAXS and POM analysis above the crystalline melting temperature (Tm) of the block copolymers showed crystalline to amorphous phase transformation, which upon cooling below their Tm regenerated crystalline morphology (lamella-like structure). Density functional theory (DFT) calculations were performed to support interlamellar distances determined from the SAXS study. Overall the modification in the orderliness of the lamellar orientation due to the amorphous PIB segment within the fatty acid-containing block copolymer leads to a new direction toward materials with modified physical properties. © 2023 Elsevier Ltd
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共 62 条
[1]  
Papananou H., Perivolari E., Chrissopoulou K., Anastasiadis S.H., Tuning polymer crystallinity via the appropriate selection of inorganic nanoadditives, Polymer, 157, pp. 111-121, (2018)
[2]  
Liu Q., Yuan S., Guo Y., Narayanan A., Peng C., Wang S., Miyoshi T., Joy A., Modulating the crystallinity, mechanical properties, and degradability of poly(ε-caprolactone) derived polyesters by statistical and alternating copolymerization, Polym. Chem., 10, 20, pp. 2579-2588, (2019)
[3]  
Prigyai N., Chanmungkalakul S., Sukwattanasinitt M., Ervithayasuporn M., Symmetry driven: the synthesis of co-substituent octasilsesquioxanes, New J. Chem., 45, pp. 14141-14148, (2021)
[4]  
Staub M.C., Li C.Y., Towards shape-translational symmetry incommensurate polymer crystals, Polymer, 195, pp. 122407-122418, (2020)
[5]  
Lomege J., Lapinte V., Negrell C., Robin J.J., Caillol S., Fatty acid-based radically polymerizable monomers: from novel poly(meth)acrylates to cutting-edge properties, Biomacromolecules, 20, 1, pp. 4-26, (2019)
[6]  
Maisonneuve L., Lebarbe T., Grau E., Cramail H., Structure-properties relationship of fatty acid-based thermoplastics as synthetic polymer mimics, Polym. Chem., 4, 22, pp. 5472-5517, (2013)
[7]  
Greenberg S.A., Alfrey T., Side chain crystallization of n-alkyl polymethacrylates and polyacrylates, J. Am. Chem. Soc., 76, 24, pp. 6280-6285, (1954)
[8]  
Hempel E., Huth H., Beiner M., Interrelation between side chain crystallization and dynamic glass transitions in higher poly(n-alkyl methacrylates), Thermochim. Acta, 403, 1, pp. 105-114, (2003)
[9]  
Maiti B., De P., RAFT polymerization of fatty acid containing monomers: controlled synthesis of polymers from renewable resources, RSC Adv., 3, 47, pp. 24983-24990, (2013)
[10]  
Mete S., Mukherjee P., Maiti B., Pal S., Ghorai P.K., De P., Degradable crystalline polyperoxides from fatty acid containing styrenic monomers, Macromolecules, 51, 21, pp. 8912-8921, (2018)
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