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ABSTRACT
In recent decades, there has been a growing concern about the excessive consumption on petroleum-based sources. Scientists are now focused on increasing the utilization of natural and renewable sources instead of nonrenewable ones to produce safety and environmentally friendly products. Their aim is to maintain and enhance product performance while also keeping production costs in check. Within this framework, natural-fiber insulation boards emerge as a trending topic and consequently, also the use of natural adhesives to supply them and reach an entirely friendly-environment product. Natural-fiber insulation material performance is typically evaluated by its mechanical and physical properties. Among them are bending, compression, tensile strength, density, water absorption, and thermal conductivity. Throughout the cited literature, a diversity of vegetal-origin fibers, especially wood-fibers and natural adhesive sources like lignin, tannins, and proteins for insulation materials has been found, which are constantly improved in order to reach a superior production scale. This work provides a summary of research that focuses on natural fiber insulation products as well as natural adhesives, pointing to Polylactic Acid (PLA).
摘要
近几十年来，人们越来越担心石油资源的过度消费. 科学家们现在专注于增加对天然和可再生资源的利用，而不是不可再生资源，以生产安全环保的产品. 他们的目标是保持和提高产品性能，同时控制生产成本. 在这个框架内，天然纤维隔热板成为一个热门话题，因此，天然粘合剂的使用也成为了一个趋势，从而提供了一种完全友好的环境产品. 天然纤维绝缘材料的性能通常通过其机械和物理性能来评估. 其中，弯曲、压缩和拉伸强度、密度、吸水率和导热率. 在整个引用的文献中，已经发现了植物来源纤维的多样性，特别是木纤维和用于绝缘材料的天然粘合剂来源，如木质素、单宁和蛋白质，这些纤维不断改进，以达到卓越的生产规模. 本文以聚乳酸（PLA）为研究对象，对天然纤维绝缘产品和天然胶粘剂的研究进行了总结.
Acknowledgments
The authors acknowledge the support from the “Open Access Publication Funds of the Göttingen University”. In addition, they thank the companies GUTEX Holzfaserplattenwerk H. Henselmann GmbH and Co. KG (Waldshut-Tiengen, Germany) and Indorama Ventures Fibers Germany GmbH (Hattersheim, Frankfurt, Germany).
Disclosure statement
No potential conflict of interest was reported by the author(s).
Highlights
Recently, fiber insulation materials elaborated with different natural fiber sources revealed an acceptable performance. However, there is still a need to continue progress in order to reach industrial scales.
Natural adhesives used in natural-fiber insulation boards are a rising topic, due to the necessity in reach complete environmental-friendly material. In this context, polylactic acid emerges as an alternative to continue researching.
The typically reported performance of produced natural-fiber insulation boards depend on diverse standards which evaluate physical, mechanical, and thermal properties.