Polyether-polyester and HMDI Based Polyurethanes: Effect of PLLA Content on Structure and Property

Lei Shi; Ruo-Yu Zhang; Wu-Bin Ying; Han Hu; Yu-Bin Wang; Ya-Qian Guo; Wen-Qin Wang; Zhao-Bin Tang; Jin Zhu

doi:10.1007/s10118-019-2283-3

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Polyether-polyester and HMDI Based Polyurethanes: Effect of PLLA Content on Structure and Property

ARTICLE | Updated：2021-02-18

- Polyether-polyester and HMDI Based Polyurethanes: Effect of PLLA Content on Structure and Property
- Polyether-polyester and HMDI Based Polyurethanes: Effect of PLLA Content on Structure and Property
- Chinese Journal of Polymer Science 2019年37卷第11期页码：1152-1161
- Affiliations：
  
  a.Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
  b.School of Material Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
- Author bio：
  
  zhangruoy@nimte.ac.cn (R.Y.Z.)
  tangzhb04@nimte.ac.cn (Z.B.T.)
  jzhu@nimte.ac.cn (J.Z.)
- Funds：
  
  This work was financially supported by the National Key Research and Development Program of China (No. 2017YFB0309300), the National Natural Science Foundation of China (No. 51773218), Youth Innovation Promotion Association of CAS (No. 2018338), and Ningbo Natural Science Foundation (No.2018A610109). We thank Shanghai Synchrotron Radiation Facility (SSRF) for supporting the SAXS and WAXD test.
- DOI：10.1007/s10118-019-2283-3
  中图分类号：
- 收稿：2019-03-31，
  
  修回：2019-1-1，
  
  录用：2019-4-25，
  
  网络首发：2019-06-10，
  
  纸质出版：2019-11
- Accepted：
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Shi, L.; Zhang, R. Y.; Ying, W. B.; Hu, H.; Wang, Y. B.; Guo, Y. Q.; Wang, W. Q.; Tang, Z. B.; Zhu, J. Polyether-polyester and HMDI Based polyurethanes: Effect of PLLA content on structure and property. Chinese J. Polym. Sci. 2019, 37, 1152–1161.

Lei Shi, Ruo-Yu Zhang, Wu-Bin Ying, et al. Polyether-polyester and HMDI Based Polyurethanes: Effect of PLLA Content on Structure and Property[J]. Chinese Journal of Polymer Science, 2019, 37(11): 1152-1161.
Shi, L.; Zhang, R. Y.; Ying, W. B.; Hu, H.; Wang, Y. B.; Guo, Y. Q.; Wang, W. Q.; Tang, Z. B.; Zhu, J. Polyether-polyester and HMDI Based polyurethanes: Effect of PLLA content on structure and property. Chinese J. Polym. Sci. 2019, 37, 1152–1161. DOI： 10.1007/s10118-019-2283-3.

Lei Shi, Ruo-Yu Zhang, Wu-Bin Ying, et al. Polyether-polyester and HMDI Based Polyurethanes: Effect of PLLA Content on Structure and Property[J]. Chinese Journal of Polymer Science, 2019, 37(11): 1152-1161. DOI： 10.1007/s10118-019-2283-3.

摘要

Abstract

Thermoplastic poly(ether-ester-urethane)s were synthesized from poly(L-lactide) diols (PLLA diols)

polytetrahydrofuran diol (PTMG diols)

4′-dicyclohexylmethane diisocyanate (HMDI)

and 1

4-butanediol (BDO) by a two-step reaction

and the morphology and property of the resultant TPU could be adjusted by varying the PLLA contents. The soft segment was composed of PLLA and PTMG diols. By controlling the percentage of PLLA in the soft segment

the glass transition temperature and mechanical properties of the polyurethanes could be regulated. Based on the FTIR spectrum

we found that two kinds of hydrogen bonding existed individually in soft matrix and hard domain. The hydrogen bonding in soft matrix was unstable

which could be destroyed during elongation. With

in situ

stretching WAXS and SAXS experiments

we found that the PLLA crystal was destroyed and the PLLA domain oriented along the stretch direction. Finally

we proposed a schematic model to illustrate the microstructures of these elastomers before and after stretch.

关键词

Keywords

references

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