磺化聚苯乙烯催化剂的构建及对聚酯水解的影响机制

doi:10.11896/cldb.25040110

材料导报

2026, Vol. 40

Issue (6): 25040110-7 https://doi.org/10.11896/cldb.25040110

高分子与聚合物基复合材料

磺化聚苯乙烯催化剂的构建及对聚酯水解的影响机制

费红¹, 刘高喆¹, 郝猛¹, 官军³, 陈龙^1,2,*, 孙俊芬^1,2,*

1 东华大学材料科学与工程学院,上海 201620;
2 东华大学先进纤维材料全国重点实验室,上海 201620;
3 浙江佳人新材料有限公司,浙江绍兴 312000

Construction of Sulfonated Polystyrene Catalyst and Its Influence Mechanism on Polyester Hydrolysis

FEI Hong¹, LIU Gaozhe¹, HAO Meng¹, GUAN Jun³, CHEN Long^1,2,*, SUN Junfen^1,2,*

1 School of Materials Science and Engineering, Donghua University, Shanghai 201620, China;
2 State Key Laboratory of Advanced Fiber Materials, Donghua University, Shanghai 201620, China;
3 Zhejiang Jia Ren New Materials Co., Ltd., Shaoxing 312000, Zhejiang, China

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摘要本工作以苯乙烯(St)为单体、二乙烯基苯(DVB)为交联剂,通过调节交联剂比例以悬浮聚合法成功制备了凝胶型(PSS)及大孔型(PSS-macro)磺化聚苯乙烯非均相酸催化剂,研究了其结构特性对聚对苯二甲酸乙二醇酯(PET)纤维水解的催化机制,结合FTIR、SEM、TGA等表征手段系统分析了凝胶型催化剂的形貌特征与热稳定性,并探究多因素作用下的水解解聚工艺参数及催化剂循环使用性能,建立PET纤维高效水解路径。结果表明:表面形貌呈现光滑规整结构的凝胶型PSS催化剂表现出更优异的催化活性,在反应条件T=200 ℃、t=120 min、催化剂用量为4%、H₂O与PET的质量比为10∶1时,PSS-D40%催化剂可实现PET纤维完全解聚,具有最优水解效率,对苯二甲酸(TPA)收率为(96.9±0.5)%,纯度达98.6%,催化剂兼具高催化活性与可循环性,为废旧PET纤维的绿色高值化回收提供了新策略。

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关键词: 聚对苯二甲酸乙二醇酯(PET)纤维非均相催化剂交联结构水解对苯二甲酸(TPA)

Abstract: In this study, styrene (St) as monomer and divinylbenzene (DVB) as crosslinker were used as crosslinkers, and gel type (PSS) and macroporous (PSS-macro) sulfonated polystyrene heterogeneous acid catalysts were successfully prepared by suspension polymerization by adjusting the proportion of crosslinkers, and the catalytic mechanism of hydrolysis of polyethylene terephthalate (PET) fibers was studied by their structural properties, and the morphological characteristics and thermal stability of gel catalysts were systematically analyzed by FTIR, SEM, TGA and other characterization methods. The hydrolysis and depolymerization process parameters and catalyst recycling performance under the action of multiple factors were explored, and an efficient hydrolysis path of PET fiber was established. The results showed that the gel-type PSS catalyst with smooth and regular structure showed better catalytic activity, and the PSS-D40% catalyst could achieve complete depolymerization of PET fibers with the best hydrolysis efficiency, the yield of terephthalic acid(TPA) was 96.9±0.5%, and the purity was 98.6% under the reaction conditions of T=200 ℃, t=120 min, and the catalyst dosage was 4%, H₂O∶PET=10 ∶1 (mass ratio). The catalyst has both high catalytic activity and recyclability, which provides a new strategy for the green and high-value recycling of waste PET fiber.

Key words: polyethylene terephthalate (PET) fiber heterogeneous catalyst crosslinked structure hydrolysis terephthalic acid (TPA)

出版日期: 2026-03-25 发布日期: 2026-04-03

ZTFLH:

TQ342+.21

基金资助: 国家重点研发计划(2020YFC1910300;2020YFC1910301)

通讯作者: ^*陈龙,东华大学材料科学与工程学院研究员、博士研究生导师。目前主要从事高聚物改性、纤维成形加工新技术、高分子材料循环回收等方面研究。happyjack@dhu.edu.cn
孙俊芬,东华大学材料科学与工程学院研究员、博士研究生导师。目前主要从事生物医用材料、高分子膜材料、有机-无机杂化材料等方面研究。junfensun@dhu.edu.cn

作者简介: 费红,东华大学材料科学与工程学院硕士研究生,在陈龙研究员的指导下进行研究。目前主要研究领域为废旧纺织品的化学再生。

引用本文:

费红, 刘高喆, 郝猛, 官军, 陈龙, 孙俊芬. 磺化聚苯乙烯催化剂的构建及对聚酯水解的影响机制[J]. 材料导报, 2026, 40(6): 25040110-7.
FEI Hong, LIU Gaozhe, HAO Meng, GUAN Jun, CHEN Long, SUN Junfen. Construction of Sulfonated Polystyrene Catalyst and Its Influence Mechanism on Polyester Hydrolysis. Materials Reports, 2026, 40(6): 25040110-7.

链接本文:

https://www.mater-rep.com/CN/10.11896/cldb.25040110 或 https://www.mater-rep.com/CN/Y2026/V40/I6/25040110

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