Controllable porous structure polylactide self-reinforced composites with a large processing temperature window

Renzhi Li; Yangyang Feng; Song Zhang; Constantinos Soutis; Hugh Gong

doi:10.1016/j.compositesb.2024.111996

Controllable porous structure polylactide self-reinforced composites with a large processing temperature window

Renzhi Li, Yangyang Feng, Song Zhang, Constantinos Soutis, Hugh Gong^* (Corresponding)

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

Polylactic acid (PLA) self-reinforced composites (SRCs) are potential alternatives to non-biodegradable plastic composites, but its narrow processing temperature window makes it difficult to manufacture. In this paper, PLA-SRCs with a processing temperature window of more than 50 °C were prepared by stereocomplexation of PLA. In addition, a novel and easy-to-handle solvent-induced interfacial modification of the fibres was developed in order to enhance the mechanical properties of PLA-SRCs. The method controllably generates a porous structure on the fibre surface, which greatly strengthens the interfacial bonding of the composites. After interfacial modification, the interfacial shear strength of PLA-SRCs was increased by almost 40 % while its tensile strength improved by more than 30 %, making this eco-friendly polymer system attractive to many modern industrial applications.

Original language	English
Article number	111996
Journal	Composites. Part B: Engineering
Volume	291
Early online date	22 Nov 2024
DOIs	https://doi.org/10.1016/j.compositesb.2024.111996
Publication status	Published - 1 Feb 2025

Keywords

Polylactic acidself-reinforced compositesstereocomplex crystallitesfibre/matrix bond

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10.1016/j.compositesb.2024.111996Licence: CC BY-NC-ND

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title = "Controllable porous structure polylactide self-reinforced composites with a large processing temperature window",

abstract = "Polylactic acid (PLA) self-reinforced composites (SRCs) are potential alternatives to non-biodegradable plastic composites, but its narrow processing temperature window makes it difficult to manufacture. In this paper, PLA-SRCs with a processing temperature window of more than 50 °C were prepared by stereocomplexation of PLA. In addition, a novel and easy-to-handle solvent-induced interfacial modification of the fibres was developed in order to enhance the mechanical properties of PLA-SRCs. The method controllably generates a porous structure on the fibre surface, which greatly strengthens the interfacial bonding of the composites. After interfacial modification, the interfacial shear strength of PLA-SRCs was increased by almost 40 % while its tensile strength improved by more than 30 %, making this eco-friendly polymer system attractive to many modern industrial applications.",

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T1 - Controllable porous structure polylactide self-reinforced composites with a large processing temperature window

AU - Li, Renzhi

AU - Feng, Yangyang

AU - Zhang, Song

AU - Soutis, Constantinos

A2 - Gong, Hugh

PY - 2025/2/1

Y1 - 2025/2/1

N2 - Polylactic acid (PLA) self-reinforced composites (SRCs) are potential alternatives to non-biodegradable plastic composites, but its narrow processing temperature window makes it difficult to manufacture. In this paper, PLA-SRCs with a processing temperature window of more than 50 °C were prepared by stereocomplexation of PLA. In addition, a novel and easy-to-handle solvent-induced interfacial modification of the fibres was developed in order to enhance the mechanical properties of PLA-SRCs. The method controllably generates a porous structure on the fibre surface, which greatly strengthens the interfacial bonding of the composites. After interfacial modification, the interfacial shear strength of PLA-SRCs was increased by almost 40 % while its tensile strength improved by more than 30 %, making this eco-friendly polymer system attractive to many modern industrial applications.

AB - Polylactic acid (PLA) self-reinforced composites (SRCs) are potential alternatives to non-biodegradable plastic composites, but its narrow processing temperature window makes it difficult to manufacture. In this paper, PLA-SRCs with a processing temperature window of more than 50 °C were prepared by stereocomplexation of PLA. In addition, a novel and easy-to-handle solvent-induced interfacial modification of the fibres was developed in order to enhance the mechanical properties of PLA-SRCs. The method controllably generates a porous structure on the fibre surface, which greatly strengthens the interfacial bonding of the composites. After interfacial modification, the interfacial shear strength of PLA-SRCs was increased by almost 40 % while its tensile strength improved by more than 30 %, making this eco-friendly polymer system attractive to many modern industrial applications.

KW - Polylactic acidself-reinforced compositesstereocomplex crystallitesfibre/matrix bond

UR - https://doi.org/10.1016/j.compositesb.2024.111996

U2 - 10.1016/j.compositesb.2024.111996

DO - 10.1016/j.compositesb.2024.111996

M3 - Article

SN - 1359-8368

VL - 291

JO - Composites. Part B: Engineering

JF - Composites. Part B: Engineering

M1 - 111996

ER -

Controllable porous structure polylactide self-reinforced composites with a large processing temperature window

Abstract

Keywords

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