Vinyl Alcohol Based Polymer

Due to its solubility in water an inexpensive and harmless solvent pva has a wide range of applications including food packaging textiles coating paper coating and healthcare products.

Vinyl alcohol based polymer. Poly vinyl alcohol pva pvoh poly vinyl alcohol is one of the few biodegradable vinyl polymers that is soluble in water. Poly vinyl alcohol pvoh pva or pval is a water soluble synthetic polymer it has the idealized formula ch 2 ch oh n it is used in papermaking textile warp sizing as a thickener and emulsion stabilizer in pvac adhesive formulations and a variety of coatings. From the earliest cave paintings of mankind to renaissance frescos and modern art masterpieces the preservation of surfaces against soiling and degradation is fundamental to transfer such a vast heritage to future generations. It is colourless white and odorless.

Accordingly increasing attention is devoted to the preparation of environmentally compatible pva based materials for a wide range of applications. The polymer is considered a nonhazardous material according to the american standard for precautionary labeling of hazardous industrial chemicals. Flexible and transparent high dielectric constant polymer films based on molecular ferroelectric modified poly vinyl alcohol yunyun yang college of polymer science and materials the state key laboratory of polymer materials engineering sichuan university chengdu 610065 china. Polyvinyl alcohol pva is one hydrophilic water soluble synthetic polymer for electrospinning due to the presence of a hydroxyl group in its repeating unit which makes it cross linkable by means of its interconnected hydrogen bonding.

We overcame these limitations by designing a cleaning system in the framework of colloid and. In this activity some interesting. In our chemistry labs a solution of polyvinyl alcohol pva can be made into a slime by adding borax solution which creates crosslinks between polymer chains. Poly vinyl alcohol based biomaterials henceforth abbreviated as pva are currently being researched for biomedical applications due to their biocompatibility and sensitivity to changes in ph as well as their ready availability and relatively simple processing.

However traditional cleaning methods are often invasive and risky. Poly vinyl alcohol pva is recognized as one of the very few vinyl polymers soluble in water also susceptible of ultimate biodegradation in the presence of suitably acclimated microorganisms. Poly vinyl alcohol pva figure 20 b is a hydrophilic vinyl polymer typically manufactured on an industrial scale by freeradical polymerization of vinyl acetate followed by alkaline.