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Effects of molecular structure of acrylates on sizing performance of allyl grafted starch

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Title Statement Effects of molecular structure of acrylates on sizing performance of allyl grafted starch
 
Added Entry - Uncontrolled Name Jin, Enqi ; Shaoxing University
Li, Manli ; Shaoxing University
Xi, Bojun ; Shaoxing University
Ye, Qiujuan ; Shaoxing University
Shaoxing University; Science and Technology Bureau of Shaoxing
 
Uncontrolled Index Term Acrylate monomer;Allyl starch;Graft copolymerization;Mechanical property;Sizing performance;Viscosity
 
Summary, etc. In order to improve the performance of allyl starch-<em>g</em>-poly(acrylic acid-co-acrylate) sizes, effect of molecular structure of the acrylate monomers grafted onto allyl starch has been studied. A series of acrylates including methyl acrylate (MA), ethyl acrylate (EA), butyl acrylate (BA) and 2-ethylhexyl acrylate (EHA) have been grafted onto allyl starch with the same degree of substitution through the initiation of Fe(NH<sub>4</sub>)<sub>2</sub>(SO<sub>4</sub>)<sub>2</sub>/H<sub>2</sub>O<sub>2</sub> redox system respectively. Meanwhile, acrylic acid (AA) is also graft copolymerized to maintain good water-dispersibility of the grafted starch. Then the properties of the grafted allyl starch, such as the apparent viscosity, viscosity stability, and adhesion to polyester fibres and the mechanical properties of sizing film, have been studied. It is found that by grafting acrylates onto the molecular chains of starch, the sizing performance of the allyl starch is improved markedly. Under the same feed ratio of the acrylic monomers to allyl starch, allyl starch-<em>g</em>-poly(AA-co-MA) shows higher paste viscosity, viscosity stability, and film elongation than the other kinds of grafted allyl starch. Allyl starch-<em>g</em>-poly(AA-co-EA) also shows higher film strength than the other ones. Both of the allyl starches grafted with MA and EA show higher abrasion resistance of sizing film and better adhesion to polyester fibres.
 
Publication, Distribution, Etc. Indian Journal of Fibre & Textile Research (IJFTR)
2016-02-23 14:27:31
 
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http://op.niscair.res.in/index.php/IJFTR/article/view/4684
 
Data Source Entry Indian Journal of Fibre & Textile Research (IJFTR); ##issue.vol## 40, ##issue.no## 4 (2015): Indian Journal of Fibre & Textile Research
 
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