Thermal, biodegradation and theoretical perspectives on nanoscale confinement in starch/cellulose nanocomposite modified via green crosslinker

被引：36

作者：

Balakrishnan, Preetha ^{[1
]}

Geethamma, V. G. ^{[1
]}

Gopi, Sreerag ^{[2
]}

Thomas, Martin George ^{[3
]}

Kunaver, Matjaz ^{[4
]}

Huskic, Miroslav ^{[4
,5
]}

Kalarikkal, Nandakumar ^{[1
]}

Volova, Tatiana ^{[6
]}

Rouxel, Didier ^{[7
]}

Thomas, Sabu ^{[1
,6
,7
,8
]}

机构：

[1] Mahatma Gandhi Univ, Int & Inter Univ Ctr Nanosci & Nanotechnol, Kottayam 686560, Kerala, India

[2] ADSO Nat Pvt Ltd, Dept Res & Dev, 2-5 RMV Second Stage, Bangalore 560094, Karnataka, India

[3] UPPA, IPREM, EPCP, CNRS,UMR 5254, Technopole Helioparc 2,Av Pdt P Angot, F-64053 Pau 09, France

[4] Natl Inst Chem, Dept Polymer Chem & Technol, Hajdrihova 19, SI-1000 Ljubljana, Slovenia

[5] Fac Polymer Technol, Ozare 19, Slovenj Gradec, Slovenia

[6] Siberian Fed Univ, 79 Svobodnyi Av, Krasnoyarsk 660041, Russia

[7] Univ Lorraine, CNRS, UMR 7198, Nancy, France

[8] Mahatma Gandhi Univ, Sch Chem Sci, Kottayam 686560, Kerala, India

来源：

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2019年 / 134卷

关键词：

Crosslinking; Cellulose nanofiber; Viscoelastic; DYNAMIC-MECHANICAL ANALYSIS; THERMOPLASTIC STARCH; PHYSICOCHEMICAL PROPERTIES; CASSAVA STARCH; FILMS; BEHAVIOR; ALCOHOL); BARRIER; ACID;

D O I：

10.1016/j.ijbiomac.2019.05.088

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

In this research work, we propose a synergistic effect of a green crosslinker and cellulose nanomaterial on the crystallinity, viscoelastic, and thermal properties of starch nanocomposites. A disaccharide derivative was used as a bio crosslinker and nanofiber from pineapple leaf as a reinforcing phase for starch. Sucrose was oxidised using periodate, that can selectively oxidise the vicinal hydroxyl group of sucrose and form tetra aldehyde derivative. Crystallinity of films after crosslinking decreased with successive addition of crosslinker. The melting temperature of films increased because of formation of more dense structure after crosslinking. Morphological investigations were analysed by atomic force microscopy. Polymer chain confinement and mechanics were quantified. The crosslink densities of the films were calculated using two models, phantom model and affine model, using storage modulus data. By using very low amount of crosslinker and nanoreinforcement, the properties of thermoplastic starch were significantly improved. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：781 / 790

页数：10

共 45 条

[1] Biocomposites from wheat straw nanofibers: Morphology, thermal and mechanical properties [J].