A Novel Method for Preparing Microcellular PBAT/GNPs Foam with High Volume Expansion Ratio: Effect of Vacuum Foaming

IF 4.7 3区工程技术 Q2 ENGINEERING, ENVIRONMENTAL

Journal of Polymers and the Environment Pub Date : 2024-08-28 DOI:10.1007/s10924-024-03384-5

Yu Xue, Longzhen Wang, Xiangdong Wang, Hongfu Zhou, Yafeng Deng

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Abstract

Poly (butylene adipate-co-terephthalate) (PBAT) foam is a green and promising candidate to replace traditional oil-based polymer foam in the fields of buffer packaging, sporting goods and biomedicine, because of its admirable toughness, good resilience properties and excellent biodegradability. Herein, a novel methodology using the combination of autoclave foaming and vacuum foaming was reported to prepare chain-extended PBAT (CPBAT)/graphene nanosheets (GNPs) microcellular foams with high volume expansion ratio (VER). Compared with that prepared by single autoclave foaming, PBAT microcellular foams prepared by the combination of autoclave foaming and vacuum foaming possessed a higher VER up to 7.60, which had an increase of 324.58%. GNPs were used for the achievement of the filling modification of PBAT, which increased the cell density and compression properties of PBAT foams. When GNPs content were 2 phr, the compressive strength of CPBAT/GNPs2 foam reached 0.82 MPa. Above all, this research will provide a new facile approach to prepare biodegradable microcellular polymer foams with high VER.

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制备具有高体积膨胀比的微孔 PBAT/GNPs 泡沫的新方法：真空发泡的影响

聚（己二酸丁二醇酯-对苯二甲酸丁二醇酯）（PBAT）泡沫因其令人赞叹的韧性、良好的回弹性能和优异的生物降解性，成为缓冲包装、体育用品和生物医药领域替代传统油基聚合物泡沫的绿色、有前途的候选材料。本研究采用高压釜发泡和真空发泡相结合的新方法制备了具有高体积膨胀比（VER）的链延伸 PBAT（CPBAT）/石墨烯纳米片（GNPs）微孔泡沫。与单一高压釜发泡相比，高压釜发泡和真空发泡相结合制备的 PBAT 微孔泡沫的体积膨胀率高达 7.60，提高了 324.58%。利用 GNPs 实现了 PBAT 的填充改性，提高了 PBAT 泡沫的细胞密度和压缩性能。当 GNPs 含量为 2 phr 时，CPBAT/GNPs2 泡沫的抗压强度达到 0.82 MPa。总之，这项研究将为制备具有高 VER 的可生物降解微孔聚合物泡沫提供一种新的简便方法。

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来源期刊

Journal of Polymers and the Environment 工程技术-高分子科学

CiteScore

9.50

自引率

7.50%

发文量

297

审稿时长

9 months

期刊介绍： The Journal of Polymers and the Environment fills the need for an international forum in this diverse and rapidly expanding field. The journal serves a crucial role for the publication of information from a wide range of disciplines and is a central outlet for the publication of high-quality peer-reviewed original papers, review articles and short communications. The journal is intentionally interdisciplinary in regard to contributions and covers the following subjects - polymers, environmentally degradable polymers, and degradation pathways: biological, photochemical, oxidative and hydrolytic; new environmental materials: derived by chemical and biosynthetic routes; environmental blends and composites; developments in processing and reactive processing of environmental polymers; characterization of environmental materials: mechanical, physical, thermal, rheological, morphological, and others; recyclable polymers and plastics recycling environmental testing: in-laboratory simulations, outdoor exposures, and standardization of methodologies; environmental fate: end products and intermediates of biodegradation; microbiology and enzymology of polymer biodegradation; solid-waste management and public legislation specific to environmental polymers; and other related topics.