TY - JOUR
T1 - Effect of functionalized nanodiamond on properties of polylactic acid eco-friendly composite films
AU - Han, Wenshuang
AU - Wu, Minjie
AU - Rong, Jianxin
AU - Zhang, Shuo
AU - Zhang, Xinyang
AU - Zhao, Tao
AU - Yu, Xiaoyan
AU - Naito, Kimiyoshi
AU - Zhang, Qingxin
N1 - Funding Information:
This work was funded by the National Natural Science Foundation of China ( 51573037 ) and the Natural Science Foundation of Hebei Province, China ( E2021202035 , E2019202348 ). We would like to appreciate to the supports of that sincerely.
Publisher Copyright:
© 2023 Elsevier B.V.
PY - 2023/3
Y1 - 2023/3
N2 - With the depletion of petroleum energy and the seriousness of environmental problems, environmentally friendly materials are attracting more and more research attentions. Polylactic acid (PLA) has good biodegradability and biocompatibility, while its inherent brittleness and low toughness severely limit its scope of application. In this study, maleic anhydride grafted styrene-ethylene/butylene-styrene copolymers (MAH-g-SEBS) functionalized nanodiamond (SEBS-g-ND) was successfully prepared by covalent linkage of MAH-g-SEBS and aminated nanodiamond(NH2-ND) via acid-amine condensation, which improved the interfacial adhesion of nanodiamond(ND) to the matrix and achieved uniform dispersion of nanoparticles in the matrix. SEBS-g-ND was used as a reinforcing agent for the PLA/MAH-g-SEBS blended films to achieve simultaneous enhancement of PLA strength and fracture toughness. The results revealed that the tensile strength, modulus of elasticity and elongation at break were increased by 41.0, 50.6 and 543.7 %, respectively, when SEBS-g-ND was added at 1.5 wt%. At the same time, the thermal degradation temperature and thermal conductivity of the nanocomposite films were increased. This is of great significance to areas of PLA commercial plastics and biofilms.
AB - With the depletion of petroleum energy and the seriousness of environmental problems, environmentally friendly materials are attracting more and more research attentions. Polylactic acid (PLA) has good biodegradability and biocompatibility, while its inherent brittleness and low toughness severely limit its scope of application. In this study, maleic anhydride grafted styrene-ethylene/butylene-styrene copolymers (MAH-g-SEBS) functionalized nanodiamond (SEBS-g-ND) was successfully prepared by covalent linkage of MAH-g-SEBS and aminated nanodiamond(NH2-ND) via acid-amine condensation, which improved the interfacial adhesion of nanodiamond(ND) to the matrix and achieved uniform dispersion of nanoparticles in the matrix. SEBS-g-ND was used as a reinforcing agent for the PLA/MAH-g-SEBS blended films to achieve simultaneous enhancement of PLA strength and fracture toughness. The results revealed that the tensile strength, modulus of elasticity and elongation at break were increased by 41.0, 50.6 and 543.7 %, respectively, when SEBS-g-ND was added at 1.5 wt%. At the same time, the thermal degradation temperature and thermal conductivity of the nanocomposite films were increased. This is of great significance to areas of PLA commercial plastics and biofilms.
KW - MAH-g-SEBS
KW - Mechanical properties
KW - Modified nanodiamond
KW - Polylactic acid
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U2 - 10.1016/j.diamond.2023.109717
DO - 10.1016/j.diamond.2023.109717
M3 - Article
AN - SCOPUS:85147191515
SN - 0925-9635
VL - 133
JO - Diamond and Related Materials
JF - Diamond and Related Materials
M1 - 109717
ER -