TY - JOUR
T1 - Construction of highly ductile, UV-shielding polylactide/poly(butylene adipate-co-terephthalate) biocomposites with hyperbranched polysiloxane functionalized lignin as a biocompatibilizer
AU - Wu, Wei
AU - Huang, Jingshu
AU - Zhao, Wanjing
AU - Zhang, Qunchao
AU - Cao, Xianwu
AU - Li, Xiaolei
AU - Li, Robert K.Y.
PY - 2023/7/1
Y1 - 2023/7/1
N2 - Biodegradable polylactide/poly(butylene adipate-co-terephthalate) (PLA/PBAT) blends have been widely utilized as packaging materials. However, it is urgent to develop a biocompatibilizer to improve the interfacial interaction of the biodegradable immiscible polymer blends in practice. In this paper, a novel type of hyper-branched polysiloxane (HBPSi) with terminal methoxy groups was synthesized and then utilized to functionalize lignin through a hydrosilation reaction. The HBPSi modified lignin (lignin@HBPSi) was incorporated into immiscible PLA/PBAT blends to serve as a biocompatibilizer. The lignin@HBPSi was uniformly dispersed in the PLA/PBAT matrix with improved interfacial compatibility. Dynamic rheological results revealed that the addition of lignin@HBPSi reduced the complex viscosity, improving the processing ability of the PLA/PBAT composite. The PLA/PBAT composite containing 5 wt% lignin@HBPSi had a superior toughness with an elongation at break of 300.2 % and a slight enhancement in tensile stress (34.47 MPa). In addition, the presence of lignin@HBPSi contributed to blocking ultraviolet rays in the full ultraviolet band. This work provides a feasible way to develop highly ductile PLA/PBAT/lignin composites with good UV-shielding properties for the packaging applications. © 2023 Published by Elsevier B.V.
AB - Biodegradable polylactide/poly(butylene adipate-co-terephthalate) (PLA/PBAT) blends have been widely utilized as packaging materials. However, it is urgent to develop a biocompatibilizer to improve the interfacial interaction of the biodegradable immiscible polymer blends in practice. In this paper, a novel type of hyper-branched polysiloxane (HBPSi) with terminal methoxy groups was synthesized and then utilized to functionalize lignin through a hydrosilation reaction. The HBPSi modified lignin (lignin@HBPSi) was incorporated into immiscible PLA/PBAT blends to serve as a biocompatibilizer. The lignin@HBPSi was uniformly dispersed in the PLA/PBAT matrix with improved interfacial compatibility. Dynamic rheological results revealed that the addition of lignin@HBPSi reduced the complex viscosity, improving the processing ability of the PLA/PBAT composite. The PLA/PBAT composite containing 5 wt% lignin@HBPSi had a superior toughness with an elongation at break of 300.2 % and a slight enhancement in tensile stress (34.47 MPa). In addition, the presence of lignin@HBPSi contributed to blocking ultraviolet rays in the full ultraviolet band. This work provides a feasible way to develop highly ductile PLA/PBAT/lignin composites with good UV-shielding properties for the packaging applications. © 2023 Published by Elsevier B.V.
KW - Poly(lactic acid)
KW - Poly(butyleneadipate-co-terephthalate)
KW - Lignin
KW - Compatibility
KW - Ductility
KW - Ultraviolet shielding
KW - BLENDS
KW - COMPOSITES
KW - STRENGTH
UR - http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=001010151200001
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85162190648&origin=recordpage
UR - http://www.scopus.com/inward/record.url?scp=85162190648&partnerID=8YFLogxK
U2 - 10.1016/j.ijbiomac.2023.124943
DO - 10.1016/j.ijbiomac.2023.124943
M3 - RGC 21 - Publication in refereed journal
SN - 0141-8130
VL - 242
JO - International Journal of Biological Macromolecules
JF - International Journal of Biological Macromolecules
IS - Part 2
M1 - 124943
ER -