Fabrication of spider silk-inspired bio-based polymeric materials under dynamic nanoconfinement as high-strong, ultra-tough, and multifunctional plastic substitutes

被引：11

作者：

Chang, Zhiwei ^{[1
,2
]}

Shen, Yulin ^{[1
,2
]}

Xue, Junfang ^{[1
,2
]}

Sun, Yi ^{[1
,2
]}

Zhang, Shifeng ^{[1
,2
]}

机构：

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

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

来源：

CHEMICAL ENGINEERING JOURNAL | 2023年 / 457卷

基金：

中央高校基本科研业务费专项资金资助; 中国国家自然科学基金;

关键词：

Biomimetic; Nanoconfinement; Strong and tough; Degradable; Multifunctional; SOY PROTEIN ISOLATE; GRAPHENE; FILMS;

D O I：

10.1016/j.cej.2022.140984

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The preparation of degradable bio-based materials with superhigh strength and toughness persists an enormous challenge. The natural spider silk presents ultrahigh tensile strength along with fracture toughness, due to the nanoconfinement effect of hydrogen-bonded crystalline beta-sheets on the soft amorphous protein matrix. Herein, under inspiration of nanoconfinement effect in spider silk, an ingenious approach is proposed for fabricating a high-strong and ultra-tough soy protein (SP)-based material with dynamic nanoconfinement phases induced by tannic acid (TA) as hydrogen bond (H-bond) cross-linkers between hyperbranched polyester (HBPE) plasticizer and SP matrix molecules. Due to H-bond crosslinked dynamic nanoconfinement, the fabricated SP/HBPE/TA film reveals a superior tensile strength of 44.6 MPa together with ultrahigh toughness of 44.7 MJ m(-3), surpassing its kind and other bio-based, and its toughness even outperforms common plastic-based materials. Additionally, the reversibility of the H-bonds and hydrophobic structure in nanoconfinement results in film with excellent recy-clability and water resistance. The final film exhibits antioxidant and antibacterial properties after incorporating of TA. In addition, it also shows effective UV-shielding performance. This work affords a novel biomimetic strategy for fabricating fully degradable and multifunctional bio-based materials with integrated outstanding strength and toughness, for potential application in plastic waste remediation.

引用

页数：12