Melt-processing of cellulose nanofibril/polylactide bionanocomposites via a sustainable polyethylene glycol-based carrier system
Artikel i vetenskaplig tidskrift, 2019

Considering the appealing need for an industrially viable approach, this works aims at demonstrating the rapid and easy melt processing of Polylactide (PLA) bio-composites reinforced with cellulose nanofibrils (CNF). For this purpose and against to their high propensity to self-aggregate on processing, an aqueous CNF-based suspension in the presence of polyethylene glycol (PEG) followed by a gentle drying way were performed to provide melt-processable CNF-based masterbatches. Morphological observations coupled with rheological analyses confirmed how the strategy of the PEG-based masterbatch approach facilitated the formation of a well-dispersed and strongly interacting CNF network within the polymeric matrix. At temperatures above Tg, thermo-mechanical characterization showed that the load-bearing capacity of the web-like CNF network was even more apparent and counteracted the PEG plasticizing effect. Thermogravimetric analysis evidenced that in the case of selective positioning at the PLA-PEG interface, CNF mitigated the negative impact of PEG addition on the PLA thermal stability. These results revealed the successfulness of our sustainable organic solvent-free approach to prepare melt-processable CNF masterbatches, which can be readily converted into conventional industrially scalable melt-processing techniques.

Sustainable process

Polyethylene glycol

Melt-processing

Cellulose nanofibrils

Polylactide

Författare

Jonathan Cailloux

Universitat Politecnica de Catalunya

Jean Marie Raquez

Université de Mons

Giada Lo Re

Chalmers, Industri- och materialvetenskap, Konstruktionsmaterial

Orlando Santana

Universitat Politecnica de Catalunya

Leila Bonnaud

Université de Mons

Philippe Dubois

Université de Mons

Maria Lluïsa Maspoch

Universitat Politecnica de Catalunya

Carbohydrate Polymers

0144-8617 (ISSN)

Vol. 224 115188

Ämneskategorier

Polymerkemi

Kemiska processer

Polymerteknologi

DOI

10.1016/j.carbpol.2019.115188

Mer information

Senast uppdaterat

2019-11-07