A Study of Blends of Amphiphilic Polymers in Solution

Halabalová, Věra; Šimek, Lubomı́r

doi:10.1080/10236660500397886

Cited by 1 publication

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“…It is a biologically friendly polymer due to its full biodegradability and biocompatibility. [6,7] Moreover, its properties, such as water solubility, can be adjusted easily by controlling the degree of hydrolysis of acetate groups during its polymerization. [8] PVA can be processed in two basic ways.…”

Section: Preparation and Characterization Of Poly (Vinyl Alcohol)/lacmentioning

confidence: 99%

Preparation and Characterization of Poly (vinyl alcohol)/Lactic Acid Compounded Polymeric Films

Sedlařík

Saha

Kuřitka

et al. 2006

International Journal of Polymer Analysis and Characterization

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Poly (vinyl alcohol) (PVA) and L-lactic acid (LA) were compounded to get biodegradable polymeric film with useful mechanical, thermal, and bacteriostatic properties for possible medical or packaging applications. Samples with various concentrations of LA were prepared by using the solvent cast technique and characterized by tensile tests, differential scanning calorimetry, Fouriertransform infrared spectroscopy, thermogravimetry, evolved gas analysis, and bacteriostatic tests, and their biodegradability was investigated under aquatic and aerobic conditions. The films show a rapid increase in elasticity and decrease in glass transition temperatures due to the presence of LA. A bacteriostatic effect on Pseudomonas putida, Staphylococcus epidermis, and Micrococcus sp. was proved. The biodegradation of all samples by mixed microflora was completed within 250 hours; however, the course of biodegradation was influenced by both esterification of PVA and the presence of molecules of LA in the polymeric films.

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Section: Preparation and Characterization Of Poly (Vinyl Alcohol)/lacmentioning

confidence: 99%