𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Plasma treatment for enhancing mechanical and thermal properties of biodegradable PVA/starch blends

✍ Scribed by Sung-Yeng Yang; Chi-Yuan Huang

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
410 KB
Volume
109
Category
Article
ISSN
0021-8995

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Two series of biodegradaable polyvinyl alcohol (PVA)/starch blends, i.e., PVA with/without plasma treatment (PP/P series), were produced by single‐screw extruder. The influences of plasma pretreatment and PVA content on the tensile properties, thermal behaviors, melt flow index, and biodegradability of blends were investigated. PVA pretreated by plasma (PPVA) reacted with glycerol was found not only to mechanically strengthen the PPVA/starch blend but also to improve the compatibility of PPVA and starch. Compared with PVA/starch blends, the melt flow indices of PPVA/starch blends were improved significantly by 200–300% and their tensile strength also increased two‐to‐three‐fold. Thermogravimetry analysis (TGA) showed that the thermal stability of PPVA/starch (85/300g) blend was better than PVA/starch blend at processing temperature and outperformed than PVA and starch at high temperature. Both the PPVA/starch and PVA/starch blends finished biodegradation within 9–10 weeks in soil burial tests. The esterification reaction of PPVA and glycerol was characterized by FTIR spectroscopic measurement and TGA test. The morphologic evolutions of the blend during biodegradation were investigated carefully by scanning electron microscope (SEM) imaging. Β© 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008

πŸ“œ SIMILAR VOLUMES

Biodegradation and the dynamic mechanica
Biodegradation and the dynamic mechanical properties of starch gelatinization in poly(Ξ΅-caprolactone)/corn starch blends
✍ Derval dos Santos Rosa; JosΓ© EduardoVolponi; Cristina das GraΓ§as Fassina Guedes πŸ“‚ Article πŸ“… 2006 πŸ› John Wiley and Sons 🌐 English βš– 356 KB πŸ‘ 1 views

## Abstract Biodegradable polymers have attracted considerable attention because of their use as substitutes for nonbiodegradable polymers in disposable commodity applications. Poly(Ρ‐caprolactone) (PCL) was blended with thermoplastic starch prepared from regular corn starch in PCL/starch ratios of

Mechanical properties and biodegradabili
Mechanical properties and biodegradability of LDPE blends with fatty-acid esters of amylose and starch
✍ D. Bikiaris; J. Aburto; I. Alric; E. Borredon; M. Botev; C. Betchev; C. Panayiot πŸ“‚ Article πŸ“… 1999 πŸ› John Wiley and Sons 🌐 English βš– 421 KB πŸ‘ 2 views

In the present article a series of low-density polyethylene (LDPE) blends with different amounts of fatty esters of amylose and starch, were prepared in a Haake-Buchler Reomixer. The tensile as well as the dynamic thermomechanical (DMTA) properties of the blends were measured. It was found that as t

Mechanical and thermal properties of pol
Mechanical and thermal properties of poly(lactic acid)/starch blends with dioctyl maleate
✍ Jian-Feng Zhang; Xiuzhi Sun πŸ“‚ Article πŸ“… 2004 πŸ› John Wiley and Sons 🌐 English βš– 179 KB πŸ‘ 2 views

## Abstract Poly(lactic acid) (PLA)/starch blends were prepared blending with dioctyl maleate (DOM). DOM acted as a compatibilizer at low concentrations (below 5%), and markedly improved tensile strength of the blend. However, DOM functioned as a plasticizer at concentrations over 5%, significantly