Polymer-grafted Silica Nanoparticles Enable Synergistic Enhancement of Mechanical Performance and Thermal Processing Stability in Poly(3-hydroxybutyrate-<italic style="font-style: italic">co</italic>-3-hydroxyvalerate)

Ou-shuo Jiang; Jie Zhu; Qi-chen Zhang; Shao-en Qiu; Xin-ran Zhao; Dong Wu; Jia-rui Ma; Yi-qi Li; Xia-yun Huang; Zhi-hong Nie

doi:10.11777/j.issn1000-3304.2026.26216

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Polymer-grafted Silica Nanoparticles Enable Synergistic Enhancement of Mechanical Performance and Thermal Processing Stability in Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)

Research Article | 更新时间：2026-11-03

- Polymer-grafted Silica Nanoparticles Enable Synergistic Enhancement of Mechanical Performance and Thermal Processing Stability in Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)
- Acta Polymerica Sinica Pages: 1-12(2026)
- 作者机构：
  
  复旦大学高分子科学系聚合物分子工程全国重点实验室上海 200438
- 作者简介：
  
  E-mail: huangxiayun@fudan.edu.cn
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2026.26216
  CLC：
- Received：18 June 2026，
  
  Accepted：21 July 2026，
  
  Online First：02 November 2026，
- 稿件说明：
移动端阅览
姜瓯铄, 朱杰, 张绮琛, 邱绍恩, 赵欣然, 吴栋, 马佳睿, 李羿麒, 黄霞芸, 聂志鸿. 聚合物接枝二氧化硅纳米粒子协同调控聚(3-羟基丁酸酯-co-3-羟基戊酸酯)力学性能与热加工稳定性. 高分子学报, doi: 10.11777/j.issn1000-3304.2026.26216.

Jiang, O. S.; Zhu, J.; Zhang, Q. C.; Qiu, S. E.; Zhao, X. R.; Wu, D.; Ma, J. R.; Li, Y. Q.; Huang, X. Y.; Nie, Z. H. Polymer-grafted silica nanoparticles enable synergistic enhancement of mechanical performance and thermal processing stability in poly(3-hydroxybutyrate-co-3-hydroxyvalerate). Acta Polymerica Sinica (in Chinese), doi: 10.11777/j.issn1000-3304.2026.26216.
姜瓯铄, 朱杰, 张绮琛, 邱绍恩, 赵欣然, 吴栋, 马佳睿, 李羿麒, 黄霞芸, 聂志鸿. 聚合物接枝二氧化硅纳米粒子协同调控聚(3-羟基丁酸酯-co-3-羟基戊酸酯)力学性能与热加工稳定性. 高分子学报, doi: 10.11777/j.issn1000-3304.2026.26216. DOI： CSTR： 32057.14.GFZXB.2026.7702.

Jiang, O. S.; Zhu, J.; Zhang, Q. C.; Qiu, S. E.; Zhao, X. R.; Wu, D.; Ma, J. R.; Li, Y. Q.; Huang, X. Y.; Nie, Z. H. Polymer-grafted silica nanoparticles enable synergistic enhancement of mechanical performance and thermal processing stability in poly(3-hydroxybutyrate-co-3-hydroxyvalerate). Acta Polymerica Sinica (in Chinese), doi: 10.11777/j.issn1000-3304.2026.26216. DOI： CSTR： 32057.14.GFZXB.2026.7702.

摘要

为解决生物基塑料聚(3-羟基丁酸酯-

-3-羟基戊酸酯) (PHBV)在实际应用中存在的脆性、热稳定性差及循环加工性能衰减等问题，本研究提出一种基于聚合物接枝纳米粒子的界面调控策略. 通过表面引发可逆加成-断裂链转移聚合在二氧化硅(SiO

)纳米粒子表面共价接枝聚甲基丙烯酸缩水甘油酯(PGMA)，制备了SiO

@PGMA纳米粒子，并将其引入PHBV基体中构筑复合膜. 结果表明，当SiO

@PGMA添加量为10%时，复合膜表现出最佳综合性能，拉伸强度由18.29 MPa提高至36.94 MPa，韧性由0.23 MJ·m

-3

提高至0.69 MJ·m

-3

，起始热分解温度由261.4 ℃提高至275.6 ℃. 经过20次回收重塑后其仍能保持44.7%的拉伸强度，显著优于纯PHBV. 机制研究表明，PGMA界面层能够改善纳米粒子与基体的界面相容性，并促进PHBV异相成核、提高结晶度并细化球晶. 同时，PGMA可与PHBV降解过程中产生的羧基反应，从而抑制

-消除反应. 界面相容化、异相成核以及热稳定化的协同调控实现了PHBV力学性能、热稳定性和循环加工性能的同步提升. 本研究为可降解塑料的界面设计提供了一种新的策略.

Abstract

To address the intrinsic brittleness

poor thermal stability

and deterioration of recycling performance of the biobased plastic poly(3-hydroxybutyrate-

-3-hydroxyvalerate) (PHBV)

an interfacial regulation strategy based on polymer-grafted nanoparticles was developed. Poly(glycidyl methacry

late) (PGMA) was covalently grafted onto the surface of silica (SiO

) nanoparticles

via

surface-initiated reversible addition-fragmentation chain transfer polymerization to obtain SiO

@PGMA nanoparticles

which were subsequently incorporated into a PHBV matrix to fabricate composite films. The results showed that the composite film containing 10% SiO

@PGMA exhibited the best overall performance. The tensile strength increased from 18.29 MPa to 36.94 MPa

while the toughness increased from 0.23 MJ·m

-3

to 0.69 MJ·m

-3

. Meanwhile

the onset decomposition temperature (

onset

) increased from 261.4 ℃ to 275.6 ℃. After 20 recycling and reprocessing cycles

the composite film still retained 44.7% of its original tensile strength

significantly outperforming neat PHBV. Mechanistic studies revealed that the covalently grafted PGMA interfacial layer improved the compatibility between nanoparticles and the PHBV matrix

promoted heterogeneous nucleation

increased crystallinity

and refined the spherulitic structure of PHBV. In addition

the epoxy groups on the PGMA side chains could react with carboxyl groups generated during PHBV degradation

thereby suppressing the

-elimination reaction. The synergistic effects of interfacial compatibilization

heterogeneous nucleation

and thermal stabilization simultaneously enhanced the mechanical properties

thermal stability

and recycling performance of PHBV. This work provides a new interfacial design strategy for high-performance biodegradable plastics.

关键词

Keywords

references

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⁰

Polymer-grafted Silica Nanoparticles Enable Synergistic Enhancement of Mechanical Performance and Thermal Processing Stability in Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)

DOI：10.11777/j.issn1000-3304.2026.26216

摘要

Abstract

关键词

Keywords

references