scholarly journals BACTERIAL CELLULOSE WHISKER/POLY(ACRYLIC ACID-co-ACRYLAMIDE) SUPER-ABSORBENT COMPOSITE RESINS

2013 ◽  
Vol 013 (9) ◽  
pp. 1183-1189
Author(s):  
Huang Yang ◽  
Sun Dong-ping
Keyword(s):  
Acrylic Acid ◽  
Bacterial Cellulose ◽  
Composite Resins ◽  
Cellulose Whisker ◽  
Poly Acrylic Acid

scholarly journals Bacterial cellulose-poly(acrylic acid-co-N,N′-methylene-bis-acrylamide) interpenetrated networks for the controlled release of fertilizers

RSC Advances ◽  
2018 ◽  
Vol 8 (32) ◽  
pp. 17635-17644 ◽  
Author(s):  
Anamaria Zaharia ◽  
Anita-Laura Radu ◽  
Stela Iancu ◽  
Ana-Mihaela Florea ◽  
Teodor Sandu ◽  
...  
Keyword(s):  
Controlled Release ◽  
Acrylic Acid ◽  
Bacterial Cellulose ◽  
Radical Polymerization ◽  
Polymer Networks ◽  
Composite Hydrogels ◽  
Poly Acrylic Acid

In this study, composite hydrogels with interpenetrated polymer networks (IPNs), based on bacterial cellulose (BC) and poly(acrylic acid-co-N,N′-methylene-bis-acrylamide) (PAA) were synthesized by radical polymerization.

scholarly journals Novel Bacterial Cellulose-Poly (Acrylic Acid) Hybrid Hydrogels with Controllable Antimicrobial Ability as Dressings for Chronic Wounds

Polymers ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 1323 ◽  
Author(s):  
Clarence Chuah ◽  
Jing Wang ◽  
Javad Tavakoli ◽  
Youhong Tang
Keyword(s):  
Drug Release ◽  
Acrylic Acid ◽  
Bacterial Cellulose ◽  
Wound Dressing ◽  
Chronic Wounds ◽  
Hybrid Composites ◽  
Morphological Characteristics ◽  
Infrared Analysis ◽  
Slight Reduction ◽  
Poly Acrylic Acid

This investigation examines the combination of poly (acrylic acid) (PAA) and bacterial cellulose (BC) nanofibers to synthesize hydrogel hybrid composites used for wound dressing application. Amoxicillin (AM) was also grafted onto the composites for drug release. Fourier transform infrared analysis and scanning electron microscopy conducted revealed the structure and porosity of the composite being developed, as well as the successful fabrication of BC-PAA composites. The results of mechanical testing and hygroscopicity revealed that the composite shows higher stability than hydrogels which are currently used worldwide, albeit with a slight reduction in swelling capabilities. However, the composite was revealed to be responsive to a rise in pH values with an increase in composite swelling and drug release. These results together with their morphological characteristics suggest that BC-PAA hydrogel hybrid composite is a promising candidate for wound dressing application.

Facile Gelation of Fully Polymeric Conductive Hydrogel Activated by Liquid Metal Nanoparticles

2021 ◽  
Author(s):  
Ming Wang ◽  
Xiao Feng ◽  
Xijun Wang ◽  
Songnan Hu ◽  
Cunzhi Zhang ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Liquid Metal ◽  
Metal Nanoparticles ◽  
Bacterial Cellulose ◽  
Cellulose Nanofiber ◽  
Conductive Hydrogel ◽  
Poly Acrylic Acid

Novel fully polymeric conductive hydrogel was developed based on liquid metal nanoparticles (LMNPs) initiated and cross-linked poly(acrylic acid) (PAA) backbone with poly(3,4-ethylenedioxythiophene):sulfonated bacterial cellulose nanofiber (PEDOT:BCNF) nanomaterials as the conductive...

Biocompatible and Mucoadhesive Bacterial Cellulose-g-Poly(acrylic acid) Hydrogels for Oral Protein Delivery

2014 ◽  
Vol 11 (11) ◽  
pp. 4130-4142 ◽  
Author(s):  
Naveed Ahmad ◽  
Mohd Cairul Iqbal Mohd Amin ◽  
Shalela Mohd Mahali ◽  
Ismanizan Ismail ◽  
Victor Tuan Giam Chuang
Keyword(s):  
Acrylic Acid ◽  
Bacterial Cellulose ◽  
Protein Delivery ◽  
Oral Protein Delivery ◽  
Poly Acrylic Acid

Soft ionic liquid based resistive memory characteristics in a two terminal discrete polydimethylsiloxane cylindrical microchannel

2020 ◽  
Vol 8 (38) ◽  
pp. 13368-13374
Author(s):  
Muhammad Umair Khan ◽  
Gul Hassan ◽  
Jinho Bae
Keyword(s):  
Ionic Liquid ◽  
Acrylic Acid ◽  
Sodium Hydroxide ◽  
Sodium Salt ◽  
Resistive Memory ◽  
Cylindrical Microchannel ◽  
Memory Characteristics ◽  
Poly Acrylic Acid

This paper proposes a novel soft ionic liquid (IL) electrically functional device that displays resistive memory characteristics using poly(acrylic acid) partial sodium salt (PAA-Na+:H2O) solution gel and sodium hydroxide (NaOH) in a thin polydimethylsiloxane (PDMS) cylindrical microchannel.

Reactions of macroions with ester and carboxylic groups of polymers

1987 ◽  
Vol 52 (9) ◽  
pp. 2194-2203
Author(s):  
Miloslav Kučera ◽  
Dušan Kimmer ◽  
Karla Majerová ◽  
Josef Majer
Keyword(s):  
Maleic Anhydride ◽  
Acrylic Acid ◽  
Methyl Methacrylate ◽  
Bond Formation ◽  
Covalent Bond ◽  
The Other ◽  
Poly Methyl Methacrylate ◽  
Other Hand ◽  
Carboxylic Groups ◽  
Poly Acrylic Acid

In the reaction of dianions with poly(methyl methacrylate), only an insignificant amount of insoluble crosslinked product is obtained. If, however, the concentration of grafting dianions approaches that of ester groups, the amount of poly(methyl methacrylate) which may thus be crosslinked becomes quite significant. Dications, too, can bring about crosslinking of only an insignificant number of poly(methyl methacrylate) chains. Carboxylic groups in poly(acrylic acid) react with dianions and dications in an anhydrous medium similarly to ester groups. On the other hand, in the presence of a cocatalytic amount of water dications are more readily bound to carboxylic groups, forming a covalent bond. The relatively highest efficiency was observed in the bond formation between dication and the poly[styrene-alt-(maleic anhydride)], both in an anhydrous medium and in the presence of H2O.

Fabrication and Characterization of Chitosan-Poly(acrylic acid) Magnetic Nanospheres

2009 ◽  
Vol 9 (2) ◽  
pp. 1287-1290 ◽  
Author(s):  
Yuqing Ge ◽  
Song Zhang ◽  
Shiying He ◽  
Yu Zhang ◽  
Ning Gu
Keyword(s):  
Acrylic Acid ◽  
Magnetic Nanospheres ◽  
Fabrication And Characterization ◽  
Poly Acrylic Acid

Synthesis, characterization, and their some chemical and biological properties of PVA/PAA/nPS hydrogel nanocomposites: Hydrogel and wound dressing

2020 ◽  
Vol 35 (3) ◽  
pp. 203-215
Author(s):  
Mehmet Emin Diken ◽  
Berna Koçer Kizilduman ◽  
Begümhan Yilmaz Kardaş ◽  
Enes Emre Doğan ◽  
Mehmet Doğan ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Acrylic Acid ◽  
Infrared Spectra ◽  
Vinyl Alcohol ◽  
Fourier Transform Infrared ◽  
Poly Vinyl Alcohol ◽  
Seed Particles ◽  
Fourier Transform Infrared Spectra ◽  
Hydrogel Nanocomposites ◽  
Poly Acrylic Acid

The nanocomposite hydrogels were prepared by dispersing of the nanopomegranate seed particles into poly(vinyl alcohol)/poly(acrylic acid) blend matrix in an aqueous medium by the solvent casting method. These hydrogels were characterized using scanning electron microscopy, Fourier transform infrared spectra, differential scanning calorimetry, and optical contact angle instruments. The nanopomegranate seed, blend, and hydrogel nanocomposites were tested for microbial activity. In addition, cytocompatibilities of these blend and hydrogel nanocomposites/composites were tested on human lymphocyte with in vitro MTS cell viability assays. Fourier transform infrared spectra revealed that esterification reaction took place among functional groups in the structure of poly(vinyl alcohol) and poly(acrylic acid). The hydrophilic properties of all hydrogels decreased with increasing nanopomegranate seed content. The mean diameters of the nanopomegranate seed particles were about 88 nm. Nanopomegranate seed particles demonstrated antibacterial properties against gram-positive bacteria, Staphylococcus aureus, and gram-negative bacteria, Escherichia coli. The lymphocyte viabilities increased after addition of nanopomegranate seeds into the polymer blend. The swelling behavior of blend and hydrogels was dependent on the cross-linking density created by the reaction between poly(vinyl alcohol)/poly(acrylic acid) blend and nanopomegranate seed. Scanning electron microscopy images were highly consistent with Fourier transform infrared spectra, differential scanning calorimetry, and antibacterial activity results.

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