Structure and dynamics of poly(vinyl alcohol) gels in mixtures of dimethyl sulfoxide and water

被引：38

作者：

Kanaya, Toshiji ^{[1
]}

Takahashi, Nobuaki ^{[2
]}

Takeshita, Hiroki ^{[3
]}

Ohkura, Masatoshi ^{[4
]}

Nishida, Koji ^{[1
]}

Kaji, Keisuke ^{[1
]}

机构：

[1] Kyoto Univ, Inst Chem Res, Uji, Kyoto 6110011, Japan

[2] Japan Atom Energy Agcy, Neutron Sci Sect, Mat & Life Sci Div, J PARC Ctr, Tokai, Ibaraki, Japan

[3] Nagaoka Univ Technol, Dept Mat Sci & Technol, Nagaoka, Niigata 94021, Japan

[4] Toray Industries Ltd, Films &Film Prod Res Labs, Otsu, Shiga, Japan

来源：

POLYMER JOURNAL | 2012年 / 44卷 / 01期

关键词：

dynamics; gel; light scattering; neutron spin echo; phase separation; poly(vinyl alcohol); small-angle neutron scattering; SMALL-ANGLE NEUTRON; LIGHT-SCATTERING; PHASE-SEPARATION; SPINODAL DECOMPOSITION; GELATION PROCESS; MIXED-SOLVENTS; VISCOELASTICITY; TRANSPARENT; MOLECULES; HYDROGELS;

D O I：

10.1038/pj.2011.88

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We reviewed our structure studies on poly(vinyl alcohol) (PVA) gels formed in the mixtures of dimethyl sulfoxide (DMSO) and water using various scattering methods, including wide-, small-and ultra-small-angle neutron scattering and light scattering. These studies revealed the hierarchic structure of PVA gels formed in DMSO/water (60/40 v/v) in a very wide spatial scale from 1 A to several micrometers. The crosslinking points are crystallites with radii of similar to 70 angstrom, the distance between the neighboring crystallites is 180-200 angstrom, and the bicontinuous structure due to liquid-liquid phase separation is in mu m scale. We also review our dynamic studies on three kinds of PVA gels at the nanometer scale using neutron spin echo techniques to separate the concentration fluctuations observed by small-angle neutron scattering into the static and dynamics contributions. Polymer Journal (2012) 44, 83-94; doi:10.1038/pj.2011.88; published online 19 October 2011

引用

页码：83 / 94

页数：12

共 51 条

[1] FREE ENERGY OF A NONUNIFORM SYSTEM .1. INTERFACIAL FREE ENERGY [J].

CAHN, JW ;

HILLIARD, JE .

JOURNAL OF CHEMICAL PHYSICS, 1958, 28 (02) :258-267

[2] PHASE SEPARATION BY SPINODAL DECOMPOSITION IN ISOTROPIC SYSTEMS [J].

CAHN, JW .

JOURNAL OF CHEMICAL PHYSICS, 1965, 42 (01) :93-+

[3] Hydrogels for tissue engineering: scaffold design variables and applications [J].

Drury, JL ;

Mooney, DJ .

BIOMATERIALS, 2003, 24 (24) :4337-4351

[4] QUASI-ELASTIC SCATTERING BY DILUTE IDEAL POLYMER SOLUTIONS .2. EFFECTS OF HYDRODYNAMIC INTERACTIONS [J].

DUBOISVIOLETTE, E ;

DEGENNES, PG .

PHYSICS-NEW YORK, 1967, 3 (04) :181-+

[5]

Ewen B, 1997, ADV POLYM SCI, V134, P1

[6]

Flory P.J., 1957, Principles of Polymer Chemistry

[7] THEORY OF CRYSTALLIZATION IN COPOLYMERS [J].

FLORY, PJ .

TRANSACTIONS OF THE FARADAY SOCIETY, 1955, 51 (06) :848-857

[8]

Guinier G Fournet A., 1955, SMALL ANGLE SCATTERI

[9]

Haehnel W., 1924, German Patent, Patent No. [450,286, 450286]

[10]

Herrmann W. O., 1931, German Patent, Patent No. [685,048, 685048]

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