Preparation and Properties of Biodegradable Poly(butylene adipate-<italic style="font-style: italic">co</italic>-terephthalate)/Polylactide Films Films with High Water Barrier Property

Zhen-wen Liu; Li-lan Wang; Lin-bo Wu

doi:10.11777/j.issn1000-3304.2025.25172

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Preparation and Properties of Biodegradable Poly(butylene adipate-co-terephthalate)/Polylactide Films Films with High Water Barrier Property

Research Article | 更新时间：2026-02-01

- Preparation and Properties of Biodegradable Poly(butylene adipate-co-terephthalate)/Polylactide Films Films with High Water Barrier Property
- Acta Polymerica Sinica Vol. 57, Issue 2, Pages: 434-441(2026)
- 作者机构：
  
  浙江大学化学工程与生物工程学院化学工程与低碳技术全国重点实验室生物质化工教育部重点实验室杭州 310058
- 作者简介：
  
  Lin-bo Wu, E-mail: wulinbo@zju.edu.cn
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2025.25172
  CLC：
- CSTR：32057.14.GFZXB.2025.7479
- Received：24 July 2025，
  
  Accepted：28 September 2025，
  
  Published Online：25 December 2025，
  
  Published：20 February 2026
- 稿件说明：
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刘贞汶, 王利兰, 吴林波. 高水汽阻隔生物降解聚(己二酸-co-对苯二甲酸丁二醇酯)/聚乳酸膜的制备与性能. 高分子学报, 2026, 57(2), 434-441.

Liu, Z. W.; Wang, L. L.; Wu, L. B. Preparation and properties of biodegradable poly(butylene adipate-co-terephthalate)/polylactide films films with high water barrier property. Acta Polymerica Sinica (in Chinese), 2026, 57(2), 434-441.
刘贞汶, 王利兰, 吴林波. 高水汽阻隔生物降解聚(己二酸-co-对苯二甲酸丁二醇酯)/聚乳酸膜的制备与性能. 高分子学报, 2026, 57(2), 434-441. DOI： 10.11777/j.issn1000-3304.2025.25172. CSTR： 32057.14.GFZXB.2025.7479.

Liu, Z. W.; Wang, L. L.; Wu, L. B. Preparation and properties of biodegradable poly(butylene adipate-co-terephthalate)/polylactide films films with high water barrier property. Acta Polymerica Sinica (in Chinese), 2026, 57(2), 434-441. DOI： 10.11777/j.issn1000-3304.2025.25172. CSTR： 32057.14.GFZXB.2025.7479.

摘要

聚(己二酸-

-对苯二甲酸丁二醇酯) (PBAT)是重要的可生物降解聚合物，但其水汽阻隔性差，难以满足干旱、极干旱地区农用地膜的需求. 将PBAT、聚乳酸(PLA)、山嵛酸(DA)和少量相容剂ADR熔融共混，对所得共混物的水汽阻隔性、微相形貌、热转变行为、热稳定性和拉伸性能进行研究. DA可在薄膜内部形成疏水片状晶体，在薄膜表面形成疏水粗糙形貌，使其水汽阻隔性显著提高.刚性PLA的存在显著改善拉伸模量和强度，同时保持优异的延展性，避免了PBAT单独与DA共混时强度下降的不足. 少量ADR的引入改善了各组分之间的相容性，可进一步改善水汽阻隔性和力学性能. DA含量为8 wt%的PBAT/PLA/DA/ADR (DA8*)共混物膜的水汽阻隔性达到PBAT的11倍，同时拉伸强度和模量也得到改善. 该工作为高水汽阻隔全生物降解膜的设计和制备提供了一种简单实用的新策略.

Abstract

Poly(butylene aidpate-

-terephthalate) (PBAT) is an important biodegradable polymer for agricultural mulch film application

but its water vapor barrier property is still poor for application in arid and extremely arid regions. In this study

PBAT was blended with polylactide (PLA) and docosanoic acid (DA) in the absence and presence of a compatibilizer ADR

the effects of DA dosage and the presence of PLA and ADR on the water vapor barrier property

microph

ase morphology

thermal transition and stability

and tensile properties of the resulting blends and films were studied. It could be found that the DA could form hydrophobic crystal plates in the interior and hydrophobic crude morphology on the surface of the films

and therefore greatly improved the water vapor barrier property. The presence of rigid PLA significantly improved the tensile modulus and strength of the blends

while maintaining excellent ductility of PBAT

avoiding the strength reduction occurred in the PBAT/DA binary blend. The introduction of a small amount of ADR improved the compatibility among the various components

and further enhanced the water vapor barrier property and mechanical performance. The PBAT/PLA/DA/ADR film containing 8 wt% DA (DA8*) possessed WVP barrier property 11 times the level of PBAT and improved tensile properties. This work presents a simple and practical way to prepare fully biodegradable polymer films with highly improved water barrier properties and excellent mechanical properties.

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Preparation and Properties of Biodegradable Poly(butylene adipate-co-terephthalate)/Polylactide Films Films with High Water Barrier Property

DOI：10.11777/j.issn1000-3304.2025.25172

摘要

Abstract

关键词

Keywords

references