Strong and tough, pH sensible, interpenetrating network hydrogels based on gelatin and poly(methacrylic acid)

Xylan/poly(methacrylic acid) semi-interpenetrating network hydrogels were synthesized, and these hydrogels were fabricated using various ratios of xylan and methacrylic acid and cross-linked by N,N′-methylenebisacrylamide. The chemical structure and morphology of the prepared hydrogels were characterized by FT-IR spectroscopy and SEM analysis. The porous structure of the prepared hydrogels was found, and the interconnected porous channels increased when the content of xylan was increased in the hydrogels. The hydrogels presented excellent pH sensitivity and swelling reversibility. The dynamic swelling kinetics were also studied, and all obtained results indicated that the prepared xylan/poly(methacrylic acid) semi-IPN hydrogel could be used in biomedical fields, especially for drug release.

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Preparation of nanometer dispersed polypropylene/polystyrene interpenetrating network using supercritical CO2 as a swelling agent

Engineering Structures ◽

10.1016/s0141-0296(02)00063-9 ◽

2002 ◽

Author(s):

D Li

Keyword(s):

Supercritical Co2 ◽

Interpenetrating Network ◽

Swelling Agent

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STUDYING REACTIVITY RATIOS AND PHYSICAL PROPERTIES OF METHACRYLIC ACID - ETHYL ACRYLATE COPOLYMER

Vietnam Journal of Science and Technology ◽

10.15625/0866-708x/53/2/4002 ◽

2015 ◽

Vol 53 (2) ◽

Author(s):

Tran Vu Thang ◽

Pham Thi Thu Ha ◽

Nguyen Van Khoi ◽

Nguyen Van Manh ◽

Pham Thi Thu Trang

Keyword(s):

Physical Properties ◽

Methacrylic Acid ◽

Ethyl Acrylate ◽

Reactivity Ratios ◽

Acrylate Copolymer

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TiO2-based Mitoxantrone Imprinted Poly (Methacrylic acid-co-polycaprolctone diacrylate) Nanoparticles as a Drug Delivery System

Current Pharmaceutical Design ◽

10.2174/1381612823666170214122413 ◽

2017 ◽

Vol 23 (18) ◽

Cited By ~ 6

Author(s):

Maryam Bakhshizadeh ◽

Ameneh Sazgarnia ◽

Mahmoud Seifi ◽

Farzin Hadizadeh ◽

Ghadir Rajabzadeh ◽

...

Keyword(s):

Drug Delivery ◽

Drug Delivery System ◽

Delivery System ◽

Methacrylic Acid

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Study of Sedimentation Velocity of Block Copolymer Micelles

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19930071 ◽

1993 ◽

Vol 58 (1) ◽

pp. 71-76 ◽

Cited By ~ 3

Author(s):

Minmin Tian ◽

C. Ramireddy ◽

Stephen E. Webber ◽

Petr Munk

Keyword(s):

Block Copolymer ◽

Methacrylic Acid ◽

Mixed Solvent ◽

Hard Spheres ◽

Sedimentation Velocity ◽

Hydrodynamic Coefficient ◽

Block Copolymer Micelles ◽

Copolymer Micelles ◽

Size Heterogeneity ◽

Good Agreement

No anomalies were observed during the measurement of sedimentation coefficients of block copolymer micelles formed by copolymers of styrene and methacrylic acid in a mixed solvent; 80 vol.% of dioxane and 20 vol.% of water. The shapes of the sedimenting boundaries suggest that the size heterogeneity of the micelles is small. Linear relations between 1/s and c were obtained. The value of the hydrodynamic coefficient κ was between 2 and 4 in a good agreement with the value 2.75 or 2.86 that was obtained by combining Burgers' or Fixman's values of the coefficient of the concentration dependence kvs for hard spheres with Einstein's value of [η] for spheres.

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Study of polymer chain dynamics in solution by time-resolved spectrofluorometry

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19893011 ◽

1989 ◽

Vol 54 (11) ◽

pp. 3011-3024 ◽

Cited By ~ 1

Author(s):

Vlastimil Fidler ◽

Stefan Vajda ◽

Zuzana Limpouchová ◽

Jiří Dvořák ◽

Karel Procházka ◽

...

Keyword(s):

Aqueous Solutions ◽

Conformational Changes ◽

Methacrylic Acid ◽

Correlation Time ◽

General Level ◽

Polymeric Chain ◽

Relative Molecular Mass ◽

Chain Dynamics ◽

Time Resolved ◽

Covalently Bonded

The methodology of polarization time-resolved fluorometry and interpretation of its results are outlined at a general level, and the measurement on and use of facilities of the Edinburgh Instruments Model 299T apparatus are discussed in detail. The dynamics of conformational changes in chains of poly(methacrylic acid) containing covalently bonded dansyl labels are studied in aqueous solutions at various pH. It is shown that at pH > 6, the shorter effective rational correlation time τr < 2 ns corresponds to the rotation of the free dansyl label about bonds by which it is attached to the polymeric chain; at pH < 4 the longer effective rational correlation time τr = 20-26 ns corresponds to the rotation of the compact spherical formation constituted by a part of the collapsed polymeric chain in which the label is fixed and whose relative molecular mass is approx. 15 000-20 000.

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