In the modern world, petroleum‐based synthetic polymers have a great number of applications in fields ranging from food packaging to space travel. However, the processing of petroleum products and the resulting depletion of fossil fuels are major environmental concerns in today's society. As a result, the development of sustainable polymers which are made up of renewable resources and waste products is an immerging area of research. Considering the world food production, citrus fruit is most abundant and its contribution to waste generation is immense. Therefore, this study focuses on offering an alternative to the use of petroleum‐based polymers and also providing a regulatory pathway to manage citrus waste by developing novel copolymers of laccol and limonene. Two environmentally friendly compounds, laccol, derived from the sap of Toxicodendron succedaneum tree and limonene, extracted from orange peels, were copolymerized via cationic polymerization to generate d‐limonene:laccol copolymers with radiation hardening capabilities which is relevant in fields such as nuclear energy generation, medicinal sterilization, commercial irradiation, and space exploration. Formation of these copolymers was verified with infrared and nuclear magnetic resonance analysis. The synthesized copolymers were characterized using different methods and exposed to Co‐60 gamma radiation to identify alterations to their properties. POLYM. ENG. SCI., 60:607–618, 2020. © 2019 Society of Plastics Engineers

中文翻译：

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通过阳离子共聚合成的环保辐射硬d-柠檬烯和Laccol共聚物

在现代世界中，石油基合成聚合物在从食品包装到太空旅行的众多领域中都有大量应用。然而，石油产品的加工以及由此造成的化石燃料的消耗是当今社会关注的主要环境问题。结果，由可再生资源和废物制成的可持续聚合物的开发成为研究的沉浸领域。考虑到世界粮食生产，柑橘类水果是最丰富的，它对废物产生的贡献是巨大的。因此，本研究的重点是为石油基聚合物的使用提供替代方法，并通过开发新型的漆酚和柠檬烯的共聚物，为柑橘类废物的处理提供一条监管途径。两种环境友好的化合物，laccol，来源于树胶的汁液。野漆树树和苎烯，从桔皮中提取，分别通过阳离子聚合共聚以生成d -limonene：用辐射固化的能力是在相关领域如核能发电，药用灭菌，商业照射，和空间探索laccol共聚物。通过红外和核磁共振分析验证了这些共聚物的形成。合成的共聚物使用不同的方法进行表征，并暴露于Co-60γ射线中以鉴定其性能的变化。POLYM。ENG。SCI。，60：607–618，2020.©2019塑料工程师协会