Progress in bio-based plastics and plasticizing modifications
Progress in bio-based plastics and plasticizing modifications
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DOI：
10.1039/c3ta12555f
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发表时间：
2013-01-01
影响因子：
11.9
通讯作者：
Bressler, David
中科院分区：
文献类型：
--
作者：
Mekonnen, Tizazu;Mussone, Paolo;Bressler, David
在未来的几十年里，生物塑料材料有望补充并逐步取代一些化石石油基材料。多学科的研究工作已经在这些生物基材料方面取得了显著的技术和商业成功。然而，这些生物基塑料的广泛应用仍然受到其可能的固有限制中的一个或多个的挑战，例如差的可加工性、脆性、亲水性、差的湿气和气体阻隔性、差的相容性、差的电、热和物理性能。将添加剂如增塑剂掺入生物聚合物中是改善这些固有限制的常见做法。通常，将增塑剂添加到合成和生物基聚合物材料中以赋予柔性、改善韧性并降低玻璃化转变温度。本文介绍了最常见的生物基塑料，并概述了增塑剂的选择和使用的最新进展，以及它们对这些材料性能的影响。除了增塑剂，我们还介绍了其他新兴技术的前景，以提高生物基塑料的整体性能。虽然各种各样的生物基塑料正在开发中，这篇评论的重点是用于最广泛研究的生物塑料，包括聚（乳酸），聚羟基脂肪酸酯，热塑性淀粉，蛋白质塑料和醋酸纤维素的增塑剂。还讨论了生物基塑料增塑剂的挑战和未来潜力。
Over the coming few decades bioplastic materials are expected to complement and gradually replace some of the fossil oil based materials. Multidisciplinary research efforts have generated a significant level of technical and commercial success towards these bio-based materials. However, extensive application of these bio-based plastics is still challenged by one or more of their possible inherent limitations, such as poor processability, brittleness, hydrophilicity, poor moisture and gas barrier, inferior compatibility, poor electrical, thermal and physical properties. The incorporation of additives such as plasticizers into the biopolymers is a common practice to improve these inherent limitations. Generally, plasticizers are added to both synthetic and bio-based polymeric materials to impart flexibility, improve toughness, and lower the glass transition temperature. This review introduces the most common bio-based plastics and provides an overview of recent advances in the selection and use of plasticizers, and their effect on the performance of these materials. In addition to plasticizers, we also present a perspective of other emerging techniques of improving the overall performance of bio-based plastics. Although a wide variety of bio-based plastics are under development, this review focuses on plasticizers utilized for the most extensively studied bioplastics including poly(lactic acid), polyhydroxyalkanoates, thermoplastic starch, proteinaceous plastics and cellulose acetates. The ongoing challenge and future potentials of plasticizers for bio-based plastics are also discussed.