Mussel-inspired reinforcement of a biodegradable aliphatic polyester with bamboo fibers

JOURNAL OF CLEANER PRODUCTION

卷:296

Article

Hong, Gonghua^1,2,3,6  Cheng, Haitao⁷  Zhang, Shuangbao^1,2  Rojas, Orlando J.^3,4,5 

[1] Beijing Forestry Univ, Beijing Key Lab Wood Sci & Engn, Beijing 100083, Peoples R China

[2] Beijing Forestry Univ, MOE Key Lab Wooden Mat Sci & Applicat, Beijing 100083, Peoples R China

[3] Aalto Univ, Dept Bioprod & Biosyst, Vuorimiehentie 1,POB 16300, FI-00076 Espoo, Finland

[4] Univ British Columbia, Dept Chem & Biol Engn, Bioprod Inst, 2360 East Mall, Vancouver, BC V6T 1Z3, Canada

[5] Univ British Columbia, Dept Chem, Bioprod Inst, 2360 East Mall, Vancouver, BC V6T 1Z3, Canada

[6] Univ British Columbia, Dept Chem, Dept Wood Sci, 2360 East Mall, Vancouver, BC V6T 1Z3, Canada

[7] Int Ctr Bamboo & Rattan, Bamboo & Rattan Sci & Technol Key Lab, State Forestry Adm, Beijing 100102, Peoples R China

关键词: Bamboo fiber;    PBS-Based biocomposites;    Polydopamine;    Interfacial adhesion;   

DOI  :  10.1016/j.jclepro.2021.126587

来源: Elsevier

【 摘 要 】

Natural fiber-reinforced biocomposites displaying light weight, low thermal conductivity and reduced environmental footprint are increasingly relevant in structural, packaging, cementitious and masonry materials. However, the poor interfacial compatibility between fibers and typical polymers has limited the development of mechanical strength and water resistance. Here, we report a green, facile and effective method inspired by nature to promote interfacial adhesion in biocomposites based on a biodegradable aliphatic polyester (polybutylene succinate, PBS). For this purpose, PBS was reinforced with bamboo fibers modified with (3-aminopropyl) triethoxysilane and polydopamine (PDA). The PDA deposition and covalent adhesion with the fibers were promoted by self-polymerization and Michael addition and/or Schiff based secondary reactions. A distinct improvement in reinforcement was achieved together with gains in performance, including tensile strength (70%), tensile modulus (25%), flexural strength (37%), flexural modulus (24%) and impact strength (63%). The results far exceeded those measured for other fiber-reinforced biocomposites while simultaneously introduced water resistance. (c) 2021 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

【 授权许可】

Free