首页|Application of poly(lactic acid)-grafted cellulose nanofibers as both inhibitor and reinforcement for 3D-printable tough polydicyclopentadiene composites via frontal ring-opening metathesis polymerization

Application of poly(lactic acid)-grafted cellulose nanofibers as both inhibitor and reinforcement for 3D-printable tough polydicyclopentadiene composites via frontal ring-opening metathesis polymerization

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  • NSTL
  • Elsevier
? 2022 Elsevier B.V.Due to the contradiction between curing rate and degree of polymerization, fabrication of 3D-printable thermosetting polymer resin with strong, and tough properties via frontal ring-opening metathesis polymerization (FROMP) remains challenging. Here, poly(lactic acid)-grafted cellulose nanofibers (CNF-g-PLA) was used as both inhibitor and fortifier to prepare 3D printable, strong, and tough polydicyclopentadiene (PDCPD)-based composites by FROMP. When 5 % CNF-g-PLA was added, the fracture toughness and tensile strength of the PDCPD/CNF-g-PLA composites increased by 277.94 % and 12.6 %, respectively. Meanwhile, the rate of radical-induced polymerization was reduced by 106 %, significantly improved the 3D-printability of PDCPD. The two-dimensional (2D) sheet of PDCPD/CNF-g-PLA composites exhibited good flexibility, which could easily be crimped into a cylinder because of CNF-g-PLA contribution. Moreover, owing to the improved toughness, PDCPD/CNF-g-PLA composites can be used as engineering protect materials such as vehicle bumpers, further broadening the application fields of 3D-printed PDCPD/CNF-g-PLA composites. This study provides a feasible method for the application of CNF in 3D printable thermoset resins.

3D-printableCellulose nanofiberFrontal ring-opening metathesis polymerization (FROMP)Grafting modificationPolydicyclopentadiene

Ma R.、Wang S.、Ma L.、Li B.、Hu Y.、Zhang L.、Liu L.、Ma J.、Fan Y.、Yu J.、Wang Z.

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Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and Materials College of Light Industry and Food Engineering College of Chemical Engineering Nanjing Forestry Uni

2022

10.1016/j.indcrop.2022.115217

Industrial Crops and Products

Industrial Crops and Products

EISCI
ISSN：0926-6690
年,卷(期)：2022.186
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