TITLE:
Surface Modification of Cellulose with Silanes for Adhesive Application: Review
AUTHORS:
Ravindra V. Gadhave, Pritam V. Dhawale, Chaitali S. Sorate
KEYWORDS:
Cellulose, Biopolymer, Silane Modification, Adhesive, Renewable Material
JOURNAL NAME:
Open Journal of Polymer Chemistry,
Vol.11 No.2,
May
30,
2021
ABSTRACT: There has been an increasing interest in research on using bio-renewable polymers as a
replacement to traditional synthetic polymers based on petroleum resources for
adhesive applications. Cellulose, which is the most abundant biopolymer finds
application as a reinforcing agent in conventional adhesives. However, natural
polymer cellulose suffers from a few drawbacks like poor water resistance, low
mechanical strength, and compatibility within the hydrophobic matrix. For
emerging as sustainable alternatives for synthetic polymers, cellulose and its
derivatives must have comparable physical, chemical, thermal, and mechanical
properties to those of synthetic polymers. To achieve this, cellulose has been
chemically modified as it has free hydroxyl groups which act as a site for
modification. Among various techniques used crosslinking and silane
modification have shown better properties. Various silanes have been identified
and used for modifying both micro-cellulose and nano-cellulose, by the
formation of covalent bonds. Silanes have the ability to react with the low
number of free hydroxyl groups present in the cellulose surfaces, therefore
promotes surface modification. Hence referring to the increase in the research
works related to the silane modification of cellulose and its applicability
focusing on wood adhesives, the main aim of this review paper is to summarize
various works relating to this field.