Department of Civil and Environmental Engineering, University of Auckland, Auckland 1142, New Zealand.
Department of Civil and Environmental Engineering, University of Auckland, Auckland 1142, New Zealand.
Sci Total Environ. 2015 Apr 15;512-513:326-336. doi: 10.1016/j.scitotenv.2015.01.063. Epub 2015 Jan 26.
Biocomposites have been used for sustainability for a few years now and considerable advancements have been made to perfect the physical and mechanical properties. However, there still remain some considerable disadvantages (such as inferior mechanical strength, thickness swell, and rotting) which restrict their proper utilization in wider markets. Attempts have been made to remedy these drawbacks but still further investigation is required to address all the issues and alleviate as many shortcomings as possible. Additionally, concerns related to landfill gas emission prompted the necessity for effective utilization of organic wastes. Lignocellulosic wastes can be valorized by thermo-chemical conversion to form a carbonaceous and renewable material called biochar. Keeping these two problems in mind, a relatively novel idea is recommended for the manufacture of biocomposites where biochar made from pyrolysis of waste could be added with wood and plastic. It is expected to mitigate the general disadvantages of conventional wood plastic composites (WPCs) and at the same time manage landfill wastes giving rise to a potential new breed of improved next generation biocomposites. Furthermore, a 'resilient' perspective is conferred where the long term viability of the state-of-the-art product could be ensured.
生物复合材料在可持续性方面已经使用了几年,并且在完善物理和机械性能方面已经取得了相当大的进展。然而,它们仍然存在一些相当大的缺点(例如机械强度低、厚度膨胀和腐烂),限制了它们在更广泛市场中的正确利用。已经做出了一些尝试来纠正这些缺点,但仍然需要进一步的研究来解决所有问题并尽可能减轻许多缺点。此外,与垃圾填埋气排放相关的问题促使人们有必要有效地利用有机废物。木质纤维素废物可以通过热化学转化来形成一种称为生物炭的碳质可再生材料。考虑到这两个问题,建议提出一个相对新颖的想法,用于制造生物复合材料,其中可以将废物热解产生的生物炭与木材和塑料一起添加。预计这将减轻传统木塑复合材料(WPC)的一般缺点,同时管理垃圾填埋废物,从而产生一种潜在的新型改良下一代生物复合材料。此外,还赋予了“弹性”的观点,以确保最先进产品的长期可行性。