Miscibility effect of biodegradable aliphatic poly(butylene succinate)/aromatic polycarbonate blends

Q2 Materials Science
T. Gumede, K. Shingange, P. Mbule, B. Motloung
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引用次数: 2

Abstract

Biodegradable polymers are gaining attention for applications in drug delivery, tissue engineering, and wound management. Methods for enhancing their potential in these applications include blending biodegradable aliphatic polyester with other biodegradable aliphatic polyester and/or blending aliphatic polyesters with aromatic polyesters to form blends with unique properties. Herein, we report on the effect of a non-biodegradable aromatic polycarbonate (PC) on the physical, mechanical, and thermal properties of biodegradable aliphatic polybutylene succinate (PBS). The PBS/PC blends contained 3, 13, and 27 wt% PC and were prepared by melt extrusion. The FTIR results revealed apparent compatibility between the two polymers. Even though the blends are compatible, the extent of miscibility depends on thermodynamics terms such as enthalpy, entropy, and Gibbs free energy. According to the SEM micrographs, adding 3 wt% PC resulted in a miscible polymer blend. Above this content, phase dispersion was observed. XRD results revealed peak shifts to higher angles and new peaks forming between 25 and 30°. This is related to the interaction between the components in the blends. The crystallinity was also improved at 3 wt% PC and this is consistent with the DSC results. TGA analysis indicated no improvement in the thermal stability of the blends. DMA revealed that at low PC content (3 wt%), there is a marked improvement in the elastic modulus. This study will benefit the field of Polymer Science because if one wants to prepare PBS/PC they will know that they perform optimally at low PC content.
可生物降解脂肪族聚丁二酸丁二烯/芳香族聚碳酸酯共混物的混相效应
可生物降解聚合物在药物输送、组织工程和伤口管理方面的应用越来越受到关注。增强其在这些应用中的潜力的方法包括将可生物降解的脂肪族聚酯与其他可生物降解的脂肪族聚酯共混和/或将脂肪族聚酯与芳香聚酯共混以形成具有独特性能的共混物。本文报道了一种不可生物降解的芳香族聚碳酸酯(PC)对可生物降解的脂肪族聚丁二酸酯(PBS)的物理、机械和热性能的影响。用熔融挤出法制备了3、13、27 wt% PC的PBS/PC共混物。FTIR结果显示了两种聚合物之间的明显相容性。尽管共混物是相容的,但混相的程度取决于热力学术语,如焓、熵和吉布斯自由能。根据SEM显微图,加入3 wt%的PC得到混相聚合物共混物。在此含量以上,观察到相色散。XRD分析结果表明,在25°~ 30°之间形成了新的峰。这与共混物中各组分之间的相互作用有关。在3 wt% PC时,结晶度也得到了改善,这与DSC结果一致。TGA分析表明共混物的热稳定性没有改善。DMA显示,在低PC含量(3 wt%)下,弹性模量有明显改善。这项研究将使聚合物科学领域受益,因为如果有人想制备PBS/PC,他们将知道它们在低PC含量下表现最佳。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Polymers from Renewable Resources
Polymers from Renewable Resources Materials Science-Polymers and Plastics
CiteScore
3.50
自引率
0.00%
发文量
15
期刊介绍: Polymers from Renewable Resources, launched in 2010, publishes leading peer reviewed research that is focused on the development of renewable polymers and their application in the production of industrial, consumer, and medical products. The progressive decline of fossil resources, together with the ongoing increases in oil prices, has initiated an increase in the search for alternatives based on renewable resources for the production of energy. The prevalence of petroleum and carbon based chemistry for the production of organic chemical goods has generated a variety of initiatives aimed at replacing fossil sources with renewable counterparts. In particular, major efforts are being conducted in polymer science and technology to prepare macromolecular materials based on renewable resources. Also gaining momentum is the utilisation of vegetable biomass either by the separation of its components and their development or after suitable chemical modification. This journal is a valuable addition to academic, research and industrial libraries, research institutions dealing with the use of natural resources and materials science and industrial laboratories concerned with polymer science.
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