Development of pH-responsive absorbent pad based on polyvinyl alcohol/agarose/anthocyanins for meat packaging and freshness indication

2022 ◽  
Author(s):  
Yue He ◽  
Baoxiang Li ◽  
Jin Du ◽  
Siyuan Cao ◽  
Min Liu ◽  
...  
Keyword(s):  
Polyvinyl Alcohol ◽  
Ph Responsive ◽  
Meat Packaging

Synthesis of Chitosan-Polyvinyl Alcohol Copolymers for Smart Drug Delivery Application

2017 ◽  
Vol 25 (3) ◽  
pp. 241-246 ◽  
Author(s):  
Neha Mulchandani ◽  
Nimish Shah ◽  
Tejal Mehta
Keyword(s):  
Drug Delivery ◽  
Drug Release ◽  
Polyvinyl Alcohol ◽  
Morphological Changes ◽  
Crosslinking Agent ◽  
Ph Responsive ◽  
Thermal Transitions ◽  
Scanning Calorimetry ◽  
Model Drug

Chitosan is a natural polymer obtained from exoskeletons of crustaceans and polyvinyl alcohol (PVA) is a synthetic polymer which has excellent film forming ability along with non-toxic nature. The current work focuses on synthesizing a smart polymer by copolymerization of natural and synthetic polymers and exploring its applications in drug delivery. The copolymers were blended in different ratios and were synthesized using ammonium ceric nitrate as initiator and glutaraldehyde as a crosslinking agent which were converted to films by casting method. Amoxicillin, as a model drug was incorporated to the copolymerized films to study the in-vitro drug release. The films obtained were evaluated by varying the pH to study the pH responsive nature of films. Drug release studies were performed to obtain the release profile of drug; water uptake capacity of the copolymerized film were measured to determine the swelling behaviour of the films. The films were further characterized using Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM) and Differential Scanning Calorimetry (DSC) to identify the structural and morphological changes along with thermal transitions. The results indicate that the synthesized copolymers are pH responsive in nature having great potential for application in controlled and targeted drug delivery.

Preparation of macroporous polyvinyl alcohol formaldehyde based hydrogels and their dual thermo- and pH-responsive behavior

2020 ◽  
Vol 509 ◽  
pp. 144754
Author(s):  
Kai Shi ◽  
Zhi Liu ◽  
Yanxiong Pan ◽  
Baolong Wang ◽  
Jiuduo Xu ◽  
...  
Keyword(s):  
Polyvinyl Alcohol ◽  
Ph Responsive ◽  
Responsive Behavior

Preparation of pH-Responsive Polyvinyl Alcohol Hydrogels and Their Drug-Releasing Behavior

2012 ◽  
Vol 69 (9) ◽  
pp. 539-542 ◽  
Author(s):  
Takeshi YAMADA ◽  
Michinori KARIKOMI ◽  
Takao KIMURA
Keyword(s):  
Polyvinyl Alcohol ◽  
Ph Responsive

A supramolecular hydrogel with monitorable macro/microscopic shape memory performance

2019 ◽  
Vol 55 (79) ◽  
pp. 11856-11859 ◽  
Author(s):  
Wu Wang ◽  
Hua Lai ◽  
Zhongjun Cheng ◽  
Zhimin Fan ◽  
Haiyang Zhang ◽  
...  
Keyword(s):  
Polyvinyl Alcohol ◽  
Shape Memory ◽  
Carbon Nanoparticles ◽  
Memory Performance ◽  
Ph Responsive ◽  
Supramolecular Hydrogel ◽  
Fluorescent Carbon Nanoparticles ◽  
Fluorescent Carbon

A supramolecular shape memory hydrogel with monitorable macro/microscopic shape memory performance was prepared through a combination of pH-responsive fluorescent carbon nanoparticles, polyvinyl alcohol and cross-linked polyacrylamide.

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