Effect of recycling on the properties of nanocellulose-barrier and mechanical properties

Kirubanandan Shanmugam, Humayun Nadeem, Swambabu Varanasi, Gil Gamier, Warren Batchelor

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

Abstract

Plastic based packaging causes significant problems in the environment. They are neither renewable nor biodegradable and plastics are accumulating in the environment, damaging the eco-system. Recycling also remains problematic. Sustainable, recyclable materials with outstanding barrier performance are required to replace these synthetic plastics. Nanocellulose is a potential candidate to replace synthetic polymers as packaging barrier layers. Nanocellulose films have low oxygen permeability and reasonable water vapour permeability. However, the effect on the fibres and material of recycling such films has not been widely investigated. In the work reported here, we made nanocellulose films via spray coating and then recycled them using disintegration, before forming into films with vacuum filtration. The formed films were compared virgin films also formed with vacuum filtration. The recycled films retained 70 % of the strength of the virgin films. The water vapour permeability (WVP) approximately doubled, increasing to 1.2 x 10-10g.m-1.s-1Pa-1. Investigations across a range of length scales pinpointed that the likely difference was due to bundles of the cellulose nanofibers that had not fully separated in recycling.

Original languageEnglish
Title of host publicationPaper Conference and Trade Show, PaperCon 2019
PublisherTAPPI Press
Pages1401-1403
Number of pages3
ISBN (Electronic)9781510893948
Publication statusPublished - 2019
EventPaper Conference and Trade Show 2019 - Indianapolis, United States of America
Duration: 5 May 20198 May 2019
http://toc.proceedings.com/50629webtoc.pdf

Publication series

NamePaper Conference and Trade Show, PaperCon 2019
Volume2

Conference

ConferencePaper Conference and Trade Show 2019
Abbreviated titlePaperCon 2019
CountryUnited States of America
CityIndianapolis
Period5/05/198/05/19
Internet address

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