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Titolo:
Studies on pour point depression of EVA polymers in solvent mixtures containing wax
Autore:
Qian, JW; Zhou, GH; Yang, WY; Xu, YL;
Indirizzi:
Zhejiang Univ, Dept Polymer Sci & Engn, Hangzhou 310027, Peoples R China Zhejiang Univ Hangzhou Peoples R China 310027 ou 310027, Peoples R China
Titolo Testata:
JOURNAL OF APPLIED POLYMER SCIENCE
fascicolo: 4, volume: 83, anno: 2002,
pagine: 815 - 821
SICI:
0021-8995(20020124)83:4<815:SOPPDO>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
COMPLEX; MISCIBILITY; ASSOCIATION; ACID);
Keywords:
EVA copolymer; pour point depressant; polymer solution; selective solvent;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Qian, JW Zhejiang Univ, Dept Polymer Sci & Engn, Hangzhou 310027, Peoples R China Zhejiang Univ Hangzhou Peoples R China 310027 , Peoples R China
Citazione:
J.W. Qian et al., "Studies on pour point depression of EVA polymers in solvent mixtures containing wax", J APPL POLY, 83(4), 2002, pp. 815-821

Abstract

Measurements of the change of the pour point depression (DeltaT(PP)) were performed for the wax solutions made of four solvent mixtures: ethyl acetate/hexane (EA/HEX), 1,2-dichloroethane/cyclohexane (DCE/CYH), butanone/heptane (MEK/HEP), and acetone/chloroform (AC/CF) doped with EVA polymers. The values of DeltaT(PP) increase significantly with increasing of the selectivesolvent EA, DCE, MEK, and AC components, for the vinyl acetate (VA) segment in EVA copolymers, in the solvent mixtures. The solvent effect of DeltaT(PP) occurring in wax solutions can also come from the solutions of EVA polymer, which were prepared by solvent mixtures with various compositions and used as parent solutions of EVA pour point depressant. From the experimental results such as the NMR of EVA macromolecules; viscosities of EVA, waxes,and their blends; and solubilities of wax with and without EVA macromolecules in the solvent mixtures, the complexation between wax molecules and ordered ethylene segment, and wax solubilization within ordered ethylene segments in EVA macromolecules are suggested for qualitative description of the observed significant variation of DeltaT(PP). (C) 2002 John Wiley & Sons, Inc. J Appl Polym Sci 83: 815-821, 2002.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 10/12/19 alle ore 14:47:10