Thermoplastic elastomers (TPE) are studied for their unique properties of being easily processes and recycled. This paper focuses on the wide scope of thermoplastic polyolefin elastomers (TPO/TPE-O) which is one of the major classes of TPE. The performance of TPO is the cumulative effect of polyolefins and rubbers with the ease of processing due to the presence of thermoplastics. The study focuses on the classification of TPO, their routes of synthesis, composites, applications, and its impact on environment. The mechanical blending of polyolefins and conventional rubber was carried out to manufacture TPO. In further developments, the polyolefin elastomers (POE) were synthesized by copolymerization techniques to overcome the drawback of mechanical blending techniques. Environment-friendly blends of TPO are synthesized using industrial and municipal waste which includes scrap rubber tires, marble waste-filled polypropylene, computer body waste, etc. This technology will help in reducing the issue of landfills. The composites of TPO have been studied using different types of fillers which may be synthetic or bio-based. These include talc, carbon black, carbon nanotubes (CNT), Kenaf fiber, pineapple leaf fiber, etc. TPO have found their use in encapsulation, in electrical insulation, roofing, medical devices, and the automobile industry. Also, impact of using TPOs on environment is discussed here qualitatively.

中文翻译：

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弥合橡胶和塑料之间的差距：热塑性聚烯烃弹性体综述

热塑性弹性体 (TPE) 因其独特的易于加工和回收的特性而受到研究。本文重点介绍热塑性聚烯烃弹性体 (TPO/TPE-O) 的广泛范围，它是 TPE 的主要类别之一。由于热塑性塑料的存在，TPO 的性能是聚烯烃和橡胶与易于加工的累积效应。研究重点是TPO的分类、合成路线、复合材料、应用及其对环境的影响。进行聚烯烃和常规橡胶的机械共混以制造 TPO。在进一步的发展中，聚烯烃弹性体 (POE) 是通过共聚技术合成的，以克服机械共混技术的缺点。环保型 TPO 混合物是利用工业和城市垃圾合成的，包括废橡胶轮胎、大理石垃圾填充聚丙烯、电脑机身垃圾等。这项技术将有助于减少垃圾填埋场的问题。已经使用不同类型的填料研究了 TPO 的复合材料，这些填料可能是合成的或生物基的。这些包括滑石、炭黑、碳纳米管 (CNT)、红麻纤维、菠萝叶纤维等。TPO 已发现它们可用于封装、电绝缘、屋顶、医疗设备和汽车工业。此外，这里定性地讨论了使用 TPO 对环境的影响。已经使用不同类型的填料研究了 TPO 的复合材料，这些填料可能是合成的或生物基的。这些包括滑石、炭黑、碳纳米管 (CNT)、红麻纤维、菠萝叶纤维等。TPO 已发现它们可用于封装、电绝缘、屋顶、医疗设备和汽车工业。此外，这里定性地讨论了使用 TPO 对环境的影响。已经使用不同类型的填料研究了 TPO 的复合材料，这些填料可能是合成的或生物基的。这些包括滑石、炭黑、碳纳米管 (CNT)、红麻纤维、菠萝叶纤维等。TPO 已发现它们可用于封装、电绝缘、屋顶、医疗设备和汽车工业。此外，这里定性地讨论了使用 TPO 对环境的影响。