Interpolymer complex formation of some nonionogenic polymers with linear and crosslinked polyacrylic acid

Budtova, Tatiana; Сулейменов, И. Э.; Frenkel, S.Ya.

doi:10.1002/pola.1994.080320208

Cited by 19 publications

(13 citation statements)

References 2 publications

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“…It was supposed that the gel reswelling is a result of the destruction of the 1a -2 complex as it was shown for the interpolymer complex of the linear polymer 16) . The charge properties of the gel surface layer seem to play an important role in the explanation of the data obtained 19) . It is seen that the destruction process can conditionally be divided into three regions.…”

Section: Influence Of Changes Of Ph and Ionic Strength On The Swellinmentioning

confidence: 92%

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Swelling behaviour of a non-ionic poly(N-vinyl-2-pyrrolidone) gel in a linear poly(acrylic acid) solution

Bekturov¹,

Frolova

Bimendina

1999

Macromol. Chem. Phys.

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SUMMARY:The swelling behaviour of a non-ionic poly(N-vinyl-2-pyrrolidone) hydrogel in a linear poly-(acrylic acid) solution upon the influence of chain length, pH, ionic strength, and water/dimethyl sulfoxide composition was studied. The sharp shrinkage of the gel volume within a narrow range of polyacid concentration takes place as a result of the formation of an intermacromolecular gel-polymer complex on the base of hydrogen bonding. According to X-ray diffraction this complex is amorphous. The formation of the gel-polymer complex is a long term process and the system reaches equilibrium within 48 h. The swelling behaviour strongly depends on the chain length of the polyacid whereas it does not depend on the ionic strength. With increasing pH value and changing water/dimethyl sulfoxide composition the gel reswelling is induced. The complex formation with poly(acrylic acid) occurs in the same way for linear and crosslinked poly(N-vinyl-2-pyrrolidone).

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Section: Influence Of Changes Of Ph and Ionic Strength On The Swellinmentioning

confidence: 92%

“…When carboxylate anions begin to leave the surface layer the charge density of it will be smaller. The decrease of the charge density is known to favour gel contraction 19) . In the third region at pH A 6,6 the destruction of the complex is completed and the gel takes its dimension.…”

Section: Influence Of Changes Of Ph and Ionic Strength On The Swellinmentioning

confidence: 99%

Swelling behaviour of a non-ionic poly(N-vinyl-2-pyrrolidone) gel in a linear poly(acrylic acid) solution

Bekturov¹,

Frolova

Bimendina

1999

Macromol. Chem. Phys.

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“…The authors62 reported the concentration redistribution of HEC in the system hydrogel PAA–linear HEC. The additional swelling of PAA hydrogels in HEC solutions was observed and explained from the viewpoint of the double electric layer state in the hydrogel‐solution boundary.…”

Section: Formation Of Interpolymer Complexesmentioning

confidence: 99%

Interpolymer Complexes of Water‐Soluble Nonionic Polysaccharides with Polycarboxylic Acids and Their Applications

Nurkeeva¹,

Mun

Khutoryanskiy

2003

Macromolecular Bioscience

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Literature data as well as our own experimental results devoted to the complexation of polycarboxylic acids with various water‐soluble polysaccharides (methylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, starch, and dextran) by means of hydrogen bonding are systematized and analyzed. The specific peculiarities of interpolymer complexes based on polysaccharides‐polycarboxylic acids are demonstrated. The perspectives for the application of these interpolymer complexes are considered. It was shown that these materials possess good biocompatibility and adhesive properties. The promising directions for further study of interpolymer complexes between polycarboxylic acids and nonionic polysaccharides as well as existing gaps in the knowledge in this field are pointed out.Formation of compact IPCs and hydrophilic interpolymer associates.magnified imageFormation of compact IPCs and hydrophilic interpolymer associates.

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“…Poly(acrylic acid) (PAA) and poly(methacrylic acid) (P MAA) are widely used as polyelectrolytes. Many investigations have been performed on their complexation with other natural and synthetic polymers such as PV A, 11 poly(vinylbenzyltrimethylammonium chloride) ( P VB M A), 12 poly(acrylamide) (PAAm), 13 -15 poly(ethylene oxide) (PEO), 16 -18 poly(ethylene glycol) (PEG) 19 · 20 and chitosan. 21 Moreover, PAA was also used to separate proteins by precipitation of complexes of PAA and proteins.…”

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confidence: 99%

Complex Formation of Silk Fibroin with Poly(acrylic acid)

Gao

Shao

Sun

et al. 2000

Polym J

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ABSTRACT:Silk fibroin (SF) and poly(acrylic acid) (PAA) can interact when their aqueous solutions were mixed. Viscometric study showed that SF/PAA complex formation depended on the ratios of SF and PAA in dilute solution. SF/ PAA complexes varied from soluble state to gel and to precipitate when both concentrations of mixed solution were increased gradually. FT-IR results showed that PAA and SF were liable to form interpolymer hydrogen bonds, and SF conformation changed in the complexes. FT-IR spectra also suggested the formation and crystal perfection of PAA/SF complex crystal relied on the ratios of SF and PAA, which were confirmed by the observation of X-ray diffraction.KEY WORDS Complex/ Silk Fibroin I Poly(acrylic acid) I Hydrogen Bond I Silk fibroin (SF) fibers from Bombyx mori silkworm have primarily been used in textile industry for thousands of years. In the past two decades, materials concerning with SF had also been utilized in the areas of biomedical and biochemical applications. 1 -3 Blends of SF with other natural or synthetic polymers, such as poly(vinyl alcohol) (PVA), The complexation of PAA with poly(amino acids), such as poly (L-lysine) (PLL) 24 · 25 and poly(L-proline) (PLP), 26 was also invested, and interpolymer interaction between PAA and poly(amino acids) caused the conformation change ofpoly(amino acids).Recently, we have been interested in various acrylic polymers and SF blends. In our previous articles, it was found that SF was immiscible with polyacrylonitrile, but was partly miscible with poly(acrylonitrile-co-methyl acrylate) (PANMA). 27 · 28 Because of the formation of hydrogen bonds between SF and P ANMA, conformation change of SF in their blends was observed. In systems of SF/poly(potassium acrylic acid) (PAA-K) blend as well as SF/polyalanine (PALA) blend, 29 the specific interaction and conformation change of SF in these blends were observed as well. In order to provide further evidence on the specific interactions and conformation change of SF in blends, we explored the blend of SF/PAA system in present work. SF/PAA complex forming by hydrogen bond could be detected with viscometric, FT-IR and Xray diffraction. The crystallinity and perfection of complex crystal were both dependent on SF/PAA ratios. EXPERIMENTAL MaterialsPreparation of SF solution : Degummed SF from Bombyx mori silk fibers was dissolved in 9.3 mol L -l LiBr aqueous solution under constant stirring for several hours at room temperature. 6 After dialysis against deionized water for three days, the solution was filtered. This solution was further diluted with deionized water to prepare the required concentration.Preparation of PAA solution: PAA was synthesized according to the reference, 30 and molecular weight, as determined by intrinsic viscosity from the equation, 31 [TJ] =8.5 X 10-4 M 112 , is 35000. Then PAA aqueous solutions ofrequired concentration were prepared.Preparation of dilute SF/PAA mixture solution: mixed solutions were prepared by dropwise adding required amount ofO.1 wt% PAA into 0.1 wt% SF s...

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Interpolymer complex formation of some nonionogenic polymers with linear and crosslinked polyacrylic acid

Cited by 19 publications

References 2 publications

Swelling behaviour of a non-ionic poly(N-vinyl-2-pyrrolidone) gel in a linear poly(acrylic acid) solution

Swelling behaviour of a non-ionic poly(N-vinyl-2-pyrrolidone) gel in a linear poly(acrylic acid) solution

Interpolymer Complexes of Water‐Soluble Nonionic Polysaccharides with Polycarboxylic Acids and Their Applications

Complex Formation of Silk Fibroin with Poly(acrylic acid)

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