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2014•Materials Research InnovationsRequires access

Preparation and characterisation of cellulose nanocrystals thin films utilising layer-by-layer deposition

Hajo Yagoub, Songmei Ma, Shuguang Yang, Jian Zhi Xu

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Abstract

Cellulose nanocrystals (CNC) with 3–4 nm in diameter and 100–300 nm long were obtained by sulphuric acid hydrolysis from cellulose pulp. CNC were deposited by layer-by-layer (LBL) assembly with cationic polyelectrolyte, poly(allylamine hydrochloride) (PAH) and poly(diallyldimethylammonium chloride) (PDDA), to prepare thin films. PDDA is a fully charged polyelectrolyte while PAH is partially charged and its charge density is dependent on pH value. We compared the LBL assembly behaviour of CNC with weak and strong polyelectrolyte.

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What this paper is about

Cellulose nanocrystals (CNC) with 3–4 nm in diameter and 100–300 nm long were obtained by sulphuric acid hydrolysis from cellulose pulp. CNC were deposited by layer-by-layer (LBL) assembly with cationic polyelectrolyte, poly(allylamine hydrochloride) (PAH) and poly(diallyldimethylammonium chloride) (PDDA), to prepare thin films. PDDA is a fully charged polyelectrolyte while PAH is partially charged and its charge density is dependent on pH value. We compared the LBL assembly behaviour of CNC with weak and strong polyelectrolyte.

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OpenAlex reports 11 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

Cellulose nanocrystals (CNC) with 3–4 nm in diameter and 100–300 nm long were obtained by sulphuric acid hydrolysis from cellulose pulp. CNC were deposited by layer-by-layer (LBL) assembly with cationic polyelectrolyte, poly(allylamine hydrochloride) (PAH) and poly(diallyldimethylammonium chloride) (PDDA), to prepare thin films. PDDA is a fully charged polyelectrolyte while PAH is partially charged and its charge density is dependent on pH value. We compared the LBL assembly behaviour of CNC with weak and strong polyelectrolyte.

Key concepts: Polyelectrolyte, Layer by layer, Materials science, Allylamine, Cellulose, Chemical engineering, Cationic polymerization, Nanocrystal

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