Journal
POLYMER DEGRADATION AND STABILITY
Volume 183, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymdegradstab.2020.109428
Keywords
Poly(ethylene succinate); Nucleator; Crystallization; Aggregated structure; Thermal stability
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Funding
- Natural Science Foundation of Tianjin City [20JCYBJC00580]
- National key Research and development program of China [2018YFE0106400]
- Program for Prominent Young College Teachers of Tianjin Educational Committee
- Key Laboratory of Original Agro-Environmental Pollution Prevention and Control [18nybcdhj4]
- Training Program for Innovative Research Team in Tianjin Institutions of Higher Education [TD13-5021]
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The addition of EBH significantly enhances the crystallization rate and thermal stability of PES, with EBH showing good nucleating effects in PES. The hydrogen bond interaction between EBH and PES promotes rearrangement of carbonyl groups during crystallization process.
A biocompatible linear organic nucleator (EBH) was incorporated into biodegradable linear aliphatic poly(ethylene succinate) (PES) polyester to investigate effect of EBH on crystallization kinetics, aggregated structure and thermal stability of PES. Crystallization kinetic results suggested that EBH enhanced significantly crystallization rate and decreased substantially crystallization time of PES, and EBH is an excellent nucleator of PES. FTIR measurement indicated that hydrogen bond interaction exists between carbonyl group (of crystalline phase) and ester group (of amorphous phase) of PES and EBH. In-situ FTIR results revealed that upon incorporation of EBH, rearrangement of carbonyl group is faster than C-C backbone of PES in crystallization process. Thermal degradation temperature of PES increased in the presence of EBH. EBH had little effect on crystal structure of EBH. Mechanisms on nucleation and enhanced thermal stability of PES were proposed and discussed in detail. (C) 2020 Elsevier Ltd. All rights reserved.
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