Preparation and Properties of Copolyester of Poly(ethylene terephthalate) with Organosilane

Long-long Guo; Hui Li; Gang Li; Pei-xian Wang; De-xing Li; Zi-qing Wang

doi:10.11777/j.issn1000-3304.2026.26003

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Preparation and Properties of Copolyester of Poly(ethylene terephthalate) with Organosilane

更新时间：2026-05-15

- Preparation and Properties of Copolyester of Poly(ethylene terephthalate) with Organosilane
- Acta Polymerica Sinica Pages: 1-14(2026)
- 作者机构：
  
  1.石河子大学化学化工学院化工绿色过程兵团重点实验室石河子 832001
  2.新疆天业汇合新材料有限公司兵团碳基新材料产业创新研究院石河子 832001
  3.新疆理工职业大学服装纺织学院喀什 844000
- 作者简介：
  
  Zi-qing Wang, E-mail: wzq_yh@shzu.edu.cn; wzq20070420@163.com
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2026.26003
  CLC：
- CSTR：32057.14.GFZXB.2026.7582
- Received：25 January 2026，
  
  Accepted：19 March 2026，
  
  Online First：15 May 2026，
- 稿件说明：
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郭龙龙, 李慧, 李刚, 王培贤, 李得兴, 王自庆. 有机硅烷共聚改性聚对苯二甲酸乙二醇酯及其性能. 高分子学报, doi: 10.11777/j.issn1000-3304.2026.26003.

Guo, L. L.; Li, H.; Li, G.; Wang, P. X.; Li, D. X.; Wang, Z. Q. Preparation and properties of copolyester of poly(ethylene terephthalate) with organosilane. Acta Polymerica Sinica (in Chinese), doi: 10.11777/j.issn1000-3304.2026.26003.
郭龙龙, 李慧, 李刚, 王培贤, 李得兴, 王自庆. 有机硅烷共聚改性聚对苯二甲酸乙二醇酯及其性能. 高分子学报, doi: 10.11777/j.issn1000-3304.2026.26003. DOI： CSTR： 32057.14.GFZXB.2026.7582.

Guo, L. L.; Li, H.; Li, G.; Wang, P. X.; Li, D. X.; Wang, Z. Q. Preparation and properties of copolyester of poly(ethylene terephthalate) with organosilane. Acta Polymerica Sinica (in Chinese), doi: 10.11777/j.issn1000-3304.2026.26003. DOI： CSTR： 32057.14.GFZXB.2026.7582.

摘要

针对聚对苯二甲酸乙二醇酯(PET)韧性差和功能性不足的问题，本研究以双羟基封端聚二甲基硅氧烷(PDMS)为功能单体，与对苯二甲酸(PTA)和乙二醇(EG)通过直接共聚制备了一种有机硅烷共聚改性的PET共聚酯(SPET)，重点考察了PDMS分子量对SPET微观结构和宏观性能的影响. 结果发现，SPET的特性黏度[

]

在0.7 dL/g以上，PDMS的引入会破坏PET分子链的规整性，降低了SPET的结晶性能. 当PDMS的分子量为2000 g/mol时，与PET共聚获得样品SPET2中，PDMS与PET之间存在微相分离现象，在界面结合处形成纳米“孤岛”结构，提升了SPET的机械力学性能，拉伸强度和断裂伸长率分别可以达到56.4 MPa和503%，分别较纯PET提升了12%和43%，对应的抗冲击强度可以达到11.68 kJ/m

，是PET的4.7倍. 在热力学驱动下，PDMS极易向表面迁移，在SPET表面富集，降低了S

PET的表面能，赋予材料良好的防污和阻燃性能.

Abstract

To address the issues of poor toughness and insufficient functionality of poly(ethylene terephthalate) (PET)

a series of organosilane copolymerization-modified PET copolyesters (SPET) were prepared by the direct copolymerization of terephthalic acid (PTA) and ethylene glycol (EG) with dihydroxy-terminated polydimethylsiloxane (PDMS). In this study

the influence of the molecular weight of PDMS on its microstructure and macroscopic properties was investigated systematically. The results showed that the intrinsic viscosity [

]

of all the synthesized SPET was greater than 0.7 dL/g

and the introduction of PDMS disrupted the regularity of the PET molecular chains

thereby reducing the crystallinity of SPET. When the molecular weight of PDMS was 2000 g/mol

microphase separation occurred between PDMS and PET

producing a nanoscale "island" structure at their interface

enhancing the mechanical properties of SPET. Among them

SPET2 exhibited excellent mechanical performance

with a tensile strength and elongation at break of 56.4 MPa and 502.8%

respectively

which were 12% and 43% higher than those of neat PET

respectively. The corresponding impact strengt

h reached 11.68 kJ/m

which was 4.7 times that of PET. Driven by thermodynamics

PDMS would migrate to and enrich the surface of SPET

decreasing the surface energy of SPET and endowing the SPET material with excellent antifouling and flame-retardant properties.

关键词

Keywords

references

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