PVP superabsorbent nanogels

被引：19

作者：

Bueno, Vania B. ^{[1
]}

Cuccovia, Iolanda M. ^{[2
]}

Chaimovich, Hernan ^{[2
]}

Catalani, Luiz H. ^{[1
]}

机构：

[1] Univ Sao Paulo, Dept Quim Fundamental, Inst Quim, BR-05513970 Sao Paulo, Brazil

[2] Univ Sao Paulo, Dept Bioquim, Inst Quim, BR-05513970 Sao Paulo, Brazil

来源：

COLLOID AND POLYMER SCIENCE | 2009年 / 287卷 / 06期

基金：

巴西圣保罗研究基金会;

关键词：

Superabsorbent nanogel; Reversed micelles; PVP hydrogel; Fenton reaction; SWELLING BEHAVIOR; AQUEOUS-SOLUTIONS; HYDROGELS; SALT; POLYMER; WATER; GEL; PH; SULFOSUCCINATE; NANOPARTICLES;

D O I：

10.1007/s00396-009-2017-0

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Monomer free hydrogel nanoparticles (nanogels) were prepared by crosslinking preformed poly(N-vinyl-2-pyrrolidone) (PVP) entrapped in the aqueous pool of hexadecyltrimethylammonium bromide reverse micelles using the Fenton reaction. The PVP nanoparticles were spherical with a dry diameter of 27 nm. The diameter of the swollen particles was ten times higher, i.e., a swelling ratio, Q, above 900, characterizing this preparation as superabsorbent. PVP nanogel swelling was dependent on bound Fe3+ and varied with pH and ionic strength. Nanogel deswelling by salt followed the anions lyotropic series, i.e., SCN- < HSO3- < NO3- < I- < Cl- < CH3COO- < CF3SO3-. The value of Q reached 6,000 in iron-free PVP nanoparticles at low pH, making this nanogel one of the most efficient swelling systems so far described.

引用

页码：705 / 713

页数：9

共 54 条

[1] Preparation of stimuli-responsive protein nanogel by quantum-ray irradiation [J].

Akiyama, Yoko ;

Fujiwara, Takahiro ;

Takeda, Shin-ichi ;

Izumi, Yoshinobu ;

Nishijima, Shigehiro .

COLLOID AND POLYMER SCIENCE, 2007, 285 (07) :801-807

[2] Synthesis of polyacrylamide nanogels by intramolecular disulfide cross-linking [J].

Aliyar, HA ;

Hamilton, PD ;

Remsen, EE ;

Ravi, N .

JOURNAL OF BIOACTIVE AND COMPATIBLE POLYMERS, 2005, 20 (02) :169-181

[3] SWELLING EQUILIBRIA FOR ACRYLAMIDE-BASED POLYAMPHOLYTE HYDROGELS [J].

BAKER, JP ;

STEPHENS, DR ;

BLANCH, HW ;

PRAUSNITZ, JM .

MACROMOLECULES, 1992, 25 (07) :1955-1958

[4] Poly (N-vinyl-2-pyrrolidone) hydrogels produced by Fenton reaction [J].

Barros, J. A. G. ;

Fechine, G. J. M. ;

Alcantara, M. R. ;

Catalani, L. H. .

POLYMER, 2006, 47 (26) :8414-8419

[5] FREEZE-DRYING OF AQUEOUS-SOLUTIONS - MAXIMUM ALLOWABLE OPERATING TEMPERATURE [J].

BELLOWS, RJ ;

KING, CJ .

CRYOBIOLOGY, 1972, 9 (06) :559-561

[6] Cross-linked polyvinylpyrrolidone nanoparticles: a potential carrier for hydrophilic drugs [J].

Bharali, DJ ;

Sahoo, SK ;

Mozumdar, S ;

Maitra, A .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2003, 258 (02) :415-423

[7]

BIEDERMANN HG, 1975, Z NATURFORSCH B, VB 30, P226

[8]

Brannon-Peppas L., 1997, MED PLASTICS BIOMATE, V4, P34

[9] Patterning of thin Poly(N-viny1 pyrrolidone) films on silicon substrates by electron beam lithography [J].

Burkert, Sina ;

Schmidt, Thomas ;

Gohs, Uwe ;

Moench, Ingolf ;

Arndt, Karl-Friedrich .

JOURNAL OF APPLIED POLYMER SCIENCE, 2007, 106 (01) :534-539

[10] Determination of the complex formation constants for some water-soluble polymers with trivalent metal ions by differential pulse polarography [J].

Çaykara, T ;

Inam, R ;

Öztürk, Z ;

Güven, O .

COLLOID AND POLYMER SCIENCE, 2004, 282 (11) :1282-1285

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