- 作者：S. Prabhu ; csp@phy.psgtech.ac.in" class="auth_mail" title="E-mail the corresponding author ; K. Vaideki vaideki.krishnakumar@gmail.com" class="auth_mail" title="E-mail the corresponding author ; S. Anitha vp.anitha@gmail.com" class="auth_mail" title="E-mail the corresponding author
- 关键词：Cotton cellulose ; Microwave argon plasma ; Process parameter optimization ; Box&ndash ; Behnken design ; ATR-FTIR ; XRD/FESEM analysis
- 刊名：Carbohydrate Polymers
- 出版年：2017
- 出版时间：20 January 2017
- 年：2017
- 卷：156
- 期：Complete
- 页码：34-44
- 全文大小：4039 K
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Certain combinations of microwave Ar plasma process parameters improved the hydrophilicity of cotton fabric while certain other combinations reduced the same i.e., a single process gave rise to dual effect. Box-Behnken method was applied to optimize both the effects.
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ATR-FTIR analysis revealed the strain induced in each of the O6H⋯O3 inter chain hydrogen bond, O3H⋯O5, O2H⋯O6 intra chain hydrogen bond, C
class="glyphImg imgLazyJSB">H⋯O inter sheet hydrogen bond and Cclass="glyphImg imgLazyJSB">Oclass="glyphImg imgLazyJSB">C glycosidic covalent bond and rotation about C5class="glyphImg imgLazyJSB">C6 covalent bond.- class="label">•
ATR-FTIR analysis shows the lengthening of the flanking hydrogen bonds and rotation about C5
class="glyphImg imgLazyJSB">C6 covalent bond and lengthening of Cclass="glyphImg imgLazyJSB">H covalent bond in the sample for which hydrophilicity was maximized. Whereas, the ATR-FTIR analysis of the sample that exhibited minimum hydrophilicity revealed the lengthening and rotation of the O2H⋯O6 flanking hydrogen bond and C5class="glyphImg imgLazyJSB">C6 covalent bond.- class="label">•
The changes observed in the minimum hydrophilic sample were resisted by the shortening of the O3H⋯O5 intramolecular hydrogen bond and C
class="glyphImg imgLazyJSB">Oclass="glyphImg imgLazyJSB">C glycosidic bond and the change in the weak inter sheet Cclass="glyphImg imgLazyJSB">H⋯O bond length.- class="label">•
These changes lead to the alterations in the unit cell parameters and also a decrease in crystallinity which was evident from XRD studies. FESEM analysis captured the etching effect of plasma. Thus, the synergism between the structural and physical changes induced by microwave Ar plasma process was responsible for the dual behavior.