Anti-bacterial and swelling properties of acrylic acid grafted and collagen/chitosan immobilized polypropylene non-woven fabrics

2005 ◽  
Vol 98 (1) ◽  
pp. 391-400 ◽  
Author(s):  
Chyung-Chyung Wang ◽  
Cheng-Chi Chen
Keyword(s):  
Acrylic Acid ◽  
Woven Fabrics ◽  
Swelling Properties

Ionic effects on the mechanical and swelling properties of a poly(acrylic acid/acrylamide) double crosslinking hydrogel

2018 ◽  
Vol 42 (11) ◽  
pp. 9151-9158 ◽  
Author(s):  
Huijuan Zhang ◽  
Yuran Cheng ◽  
Xinjuan Hou ◽  
Biao Yang ◽  
Fang Guo
Keyword(s):  
Tensile Strength ◽  
Hydrogen Bonding ◽  
Acrylic Acid ◽  
Molecular Simulation ◽  
Metal Salts ◽  
Swelling Properties ◽  
Ionic Effects ◽  
Poly Acrylic Acid

A P(AA/AM)–Fe(NO3)3 double crosslinking gel showed a superior tensile strength of 1471 kPa compared to those of all other metal salts tested, which was demonstrated by molecular simulation to result from the stronger hydrogen bonding in this metal–(COO)n complex.

Effects of acrylic acid on preparation and swelling properties of pH-sensitive dextran hydrogels

Biomaterials ◽  
2002 ◽  
Vol 23 (4) ◽  
pp. 1103-1112 ◽  
Author(s):  
Hsin-Cheng Chiu ◽  
Yi-Fong Lin ◽  
Yuan-Hung Hsu
Keyword(s):  
Acrylic Acid ◽  
Ph Sensitive ◽  
Swelling Properties

Preparation of Poly Acrylic Acid Acrylamide Nanometer Material and its Drug Delivery Control Potential in Alkaline Condition

2016 ◽  
Vol 873 ◽  
pp. 84-88 ◽  
Author(s):  
Li Juan Feng ◽  
Jin Xiu Yuan ◽  
Hai Bo Lei ◽  
Xing Rong Zheng
Keyword(s):  
Drug Delivery ◽  
Acrylic Acid ◽  
Alkaline Condition ◽  
Control Potential ◽  
Swelling Properties ◽  
Control Drug ◽  
Nanometer Material ◽  
Ph Range ◽  
Degradation Properties ◽  
Poly Acrylic Acid

In order to explore a smart carrier which can control drug delivery in special pH environment, a type of nanometer material, namely, poly acrylic acid acrylamide (P(AA-AM)) was synthesized with acrylic acid and acrylamide as monomers. Its structure was determined using Fourier transform infrared spectroscopy (FTIR) and its swelling properties were tested by measuring its weight evolution. The drug delivery control potential was estimated by monitoring its swelling performances in the solutions of different pH values. The cycle characteristics were also investigated to determine its degradation properties in the environment. The results indicate that the synthesized material is sensitive to pH and is suitable for controlling drug delivery at the pH range from 10 to11 and below 7. Furthermore, this material can be automatic decomposition in the environment so that it is a degradable green material without causing burden to the environment.

Mechanical, thermal and swelling properties of poly(acrylic acid)–graphene oxide composite hydrogels

Soft Matter ◽  
2012 ◽  
Vol 8 (6) ◽  
pp. 1831-1836 ◽  
Author(s):  
Jianfeng Shen ◽  
Bo Yan ◽  
Tie Li ◽  
Yu Long ◽  
Na Li ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Acrylic Acid ◽  
Swelling Properties ◽  
Oxide Composite ◽  
Composite Hydrogels ◽  
Poly Acrylic Acid

Effect of the Ion Strengths in Different Salt Solutions on the Absorbencies of Poly(acrylic acid-co-acrylamide) Superabsorbent by Inverse Suspension Polymerization

2012 ◽  
Vol 550-553 ◽  
pp. 711-715
Author(s):  
Jian Jun Xie ◽  
Qing Xin Yao ◽  
Nian Zeng ◽  
Chu Ding
Keyword(s):  
Acrylic Acid ◽  
Metal Cation ◽  
Suspension Polymerization ◽  
The Self ◽  
Salt Solutions ◽  
Swelling Properties ◽  
Anionic Group ◽  
Inverse Suspension Polymerization ◽  
The Relationship ◽  
Poly Acrylic Acid

The absorbencies of poly(acrylic acid-co-acrylamide) (PAAM) are measured for the ion strengths of the salt solutions using the self-made PAAM by inverse suspension polymerization. The effects of various salt solutions on the swelling properties were studied systemically, and the relationship between the absorbency (Q) of PAAM and the concentrations of different salt solutions(c) could be expressed as Q=kcn. The absorbencies of PAAM decrease obviously with the ion strengths (less than 0.03mol/kg) and had no great change when the ion strengths were higher than 0.03mol/kg for the same solution systems. The absorbency decreased with an increase in charge of the metal cation. The absorbencies of the PAAM in the sodium solutions with different anion decreased with an increase of the ion strengths. However, the absorbencies increased with the increase in charge of the anionic group and were in order PO43->CO32->Cl-.

scholarly journals One Step E-Beam Radiation Cross-Linking of Quaternary Hydrogels Dressings Based on Chitosan-Poly(Vinyl-Pyrrolidone)-Poly(ethylene Glycol)-Poly(Acrylic Acid)

2020 ◽  
Author(s):  
Ion Călina ◽  
Maria Demeter ◽  
Anca Scărișoreanu ◽  
Veronica Sătulu ◽  
Bogdana Mitu
Keyword(s):  
Acrylic Acid ◽  
Ethylene Glycol ◽  
Transmission Rate ◽  
Vinyl Pyrrolidone ◽  
Cross Linking ◽  
Poly Ethylene Glycol ◽  
Beam Radiation ◽  
Swelling Properties ◽  
Poly Ethylene ◽  
Poly Acrylic Acid

We report on the successful preparation of wet dressings hydrogels based on Chitosan-Poly(N-Vinyl-Pyrrolidone)-Poly(ethylene glycol)-Poly(acrylic acid) and Poly(ethylene oxide) by e-beam cross-linking in weakly acidic media, to be used for rapid healing and pain release of infected skin wounds. The structure and compositions of hydrogels investigated according to sol-gel and swelling studies, network parameters, as well as FTIR and XPS analyses showed the efficient interaction of the hydrogel components upon irradiation, maintaining the bonding environment while the cross-linking degree increasing with the irradiation dose and the formation of a structure with the mesh size in the range 11-67 nm. Hydrogels with gel fraction above 85% and the best-swelling properties in different pH solutions were obtained for hydrogels produced with 15 kGy. The hydrogels are stable in the simulated physiological condition of an infected wound and show appropriate moisture retention capability and the water vapor transmission rate up to 272.67 g m-2 day-1, to ensure fast healing. The hydrogels proved to have a significant loading capacity of ibuprofen (IBU), being able to incorporate a therapeutic dose for the treatment of severe pains. Simultaneously, IBU was released up to 25% in the first 2h, having a release maximum after 8h.

Preparation and swelling properties of poly(acrylic acid-co-acrylamide) composite hydrogels

e-Polymers ◽  
2017 ◽  
Vol 17 (1) ◽  
pp. 95-106 ◽  
Author(s):  
Wei-Min Cheng ◽  
Xiang-Ming Hu ◽  
Yan-Yun Zhao ◽  
Ming-Yue Wu ◽  
Zun-Xiang Hu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Salt Tolerance ◽  
Acrylic Acid ◽  
Water Absorption ◽  
Crosslinking Agent ◽  
Salt Resistance ◽  
Composite Hydrogel ◽  
Swelling Properties ◽  
Unfavorable Effect ◽  
Poly Acrylic Acid

AbstractIn order to study the effect of composite clays on the mechanical properties, water absorption and salt tolerance of a hydrogel, a poly(acrylic acid-co-acrylamide)/bentonite/kaolin composite hydrogel was prepared. Acrylic acid and acrylamide have been used as water absorbent monomers. N,N′-methylene bisacrylamide was used as a crosslinking agent while potassium persulfate was used as an initiator. The water preserving capability, repeated water absorption, salt resistance and the mechanical properties of the composite hydrogel are analyzed and discussed. The results show that a small quantity of bentonite can increase the storage modulus of the composite hydrogel, whereas the excess clay had an unfavorable effect on the mechanical strength of the composite hydrogel. Both bentonite and kaolin significantly improved the water preserving capability, repeated water absorption and salt resistance of the composite hydrogel. Optimum values for the amounts of bentonite and kaolin were found to be 10% and 5%, respectively.

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