聚碳酸亚丙酯纤维的制备及其力学性能

虞卿磊; 张宇静; 许震; 张成建; 张兴宏

doi:10.11777/j.issn1000-3304.2024.24213

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聚碳酸亚丙酯纤维的制备及其力学性能

研究论文 | 更新时间：2025-01-26

- 聚碳酸亚丙酯纤维的制备及其力学性能
- Preparation and Mechanical Properties of Poly(propylene carbonate) Fiber
- 高分子学报 2025年56卷第1期页码：145-151
- 作者机构：
  
  1.浙江大学，生物基运输燃料技术全国重点实验室，杭州 310058
  2.浙江大学，高分子合成与功能构造教育部重点实验室，杭州 310058
  3.浙江大学，高分子科学与工程学系，杭州 310058
- 作者简介：
  
  E-mail: chengjian.zhang@zju.edu.cn
  xhzhang@zju.edu.cn
- 基金信息：
  
  国家自然科学基金(基金号 U23A2083);浙江省科技计划项目(2022C01216)
- DOI：10.11777/j.issn1000-3304.2024.24213
  中图分类号：
- CSTR：32057.14.GFZXB.2024.7301
- 纸质出版日期：2025-01-20，
  
  网络出版日期：2024-12-12，
  
  收稿日期：2024-08-14，
  
  录用日期：2024-09-25
- 稿件说明：
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虞卿磊, 张宇静, 许震, 张成建, 张兴宏. 聚碳酸亚丙酯纤维的制备及其力学性能. 高分子学报, 2025, 56(1), 145-151

Yu, Q. L.; Zhang, Y. J.; Xu, Z.; Zhang, C. J.; Zhang, X. H. Preparation and mechanical properties of poly(propylene carbonate) fiber. Acta Polymerica Sinica, 2025, 56(1), 145-151
虞卿磊, 张宇静, 许震, 张成建, 张兴宏. 聚碳酸亚丙酯纤维的制备及其力学性能. 高分子学报, 2025, 56(1), 145-151 DOI： 10.11777/j.issn1000-3304.2024.24213. CSTR： 32057.14.GFZXB.2024.7301.

Yu, Q. L.; Zhang, Y. J.; Xu, Z.; Zhang, C. J.; Zhang, X. H. Preparation and mechanical properties of poly(propylene carbonate) fiber. Acta Polymerica Sinica, 2025, 56(1), 145-151 DOI： 10.11777/j.issn1000-3304.2024.24213. CSTR： 32057.14.GFZXB.2024.7301.

摘要

聚碳酸亚丙酯(PPC)是由二氧化碳(CO

)与环氧丙烷(PO)交替共聚得到的一种可降解高分子材料，极具应用前景. 然而，有关纯PPC纤维的制备及其性能方面的研究仍较少. 本文工作采用湿法纺丝技术制备了PPC长丝，优选出PPC成纤效果最佳的纺丝溶剂和凝固浴，并通过控制不同的后处理温度和牵伸倍数，研究了PPC长丝的纤维取向、热性能及其力学性能. 研究结果表明，以

-二甲

基甲酰胺(DMF)为溶剂，H

O为凝固浴制备得到的PPC原纤性能最佳. PPC原纤经过后牵伸处理后得到具有高取向结构的PPC纤维长丝. 其中，于45 ℃水浴拉伸400倍后得到的PPC长丝，拉伸强度可达201.9 MPa，断裂伸长率为36.4%，弹性模量可达2.9 GPa. 本研究对拓宽PPC的应用领域具有积极的意义.

Abstract

Poly(propylene carbonate) (PPC) is a biodegradable polymer that can be produced by alternating copolymerization of carbon dioxide (CO

) and propylene oxide (PO). It is a typical amorphous polymer with the glass transition temperature of 30‍-‍40 ℃

and thus is considered to be difficult to spin. The research on the preparation and properties of neat PPC fiber is rare. In this study

we prepared PPC filaments by wet spinning method

and the spinning solvent and coagulation bath were selected as

-dimethylformamide (DMF) and water

respectively. The uniform PPC/DMF solution was transferred to the syringe and then extruded at the speed of 160 μL/min

passing through a 4 m long water coagulation bath. The obtained PPC nascent fiber (no further stretching) was collected on a wire collector and vacuum dried to constant weight at room temperature. The dried PPC nascent fibers are clamped on a high-precision fiber stretc

hing machine and stretched at a certain speed in a water bath at set temperatures (

e.g

. 45 ℃) to obtain PPC filaments with different stretching multiples. The orientation

thermal properties and mechanical properties of PPC filaments were studied by changing post-treatment drafting times and temperatures.

values of the PPC filaments achieved 31.6 ℃

increased by about 2 ℃ after stretching. The maximum stretching limit of PPC filaments can reach 1020 times of PPC nascent fiber; generally

it can be stretched about 600 times

and the diameter of the resulting PPC filaments is about 10 μm. The tensile strength of PPC filaments stretched 400 times at 45 ℃ at room temperature can reach 201.9 MPa

which is 20 times that of PPC sheet

87 times that of PPC/polybutylene succinic acid (PBS) composite fiber membrane

9.2 times that of PPC/poly(3-hydroxybutyrate) (PHB) composite fiber

and 9.7 times that of PPC/polylactic acid (PLA) composite fiber. The room temperature elastic modulus can reach 2.9 GPa

which is 4.1 times that of PPC sheet. The great improvement of its mechanical properties is attributed to a certain degree of highly ordered structure formed by the high orientation of the fibers after stretching. The DSC heating curves of PPC filaments showed an endothermic peak near 60 ℃

similar to the melting of "crystallization" with very small enthalpy changes (0.4-0.6 J/g)

suggesting the formation of ordered aggregation structure

rather than crystalline. In addition

the polarized optical microscope (POM)

small-angle X-ray scattering (SAXS)

wide-angle X-ray scattering (WAXS) and scanning electron microscope (SEM) characterizations also supported the formation of ordered aggregation structure in PPC filaments. This preliminary study shows the potential application of PPC in fiber materials.

关键词

聚碳酸亚丙酯CO2聚合物湿法纺丝纤维取向力学性能

Keywords

Poly(propylene carbonate)CO2-based polymerWet spinningFiber orientationMechanical properties

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