Migration resistant polymeric plasticizer for poly(vinyl chloride)

Abstract

Flexible films of poly(vinyl chloride) (PVC) and linear or branched poly(butylene adipate) (PBA), synthesized from 1,4-butanediol and adipic acid or dimethyl ester of adipic acid, were aged in an aqueous environment for 10 weeks to study how branching, molar mass, and end-group functionality affect the leaching of polyester plasticizer from thin films. Principal component analysis was applied to reveal patterns and correlations between mechanical properties, material characteristics, and aging behavior. Introduction of branches in the polyester structure increased the miscibility between PVC and the polyester, resulting in improved mechanical properties and lower water absorption. Methyl ester end-group in PBA polyester stabilized the polymeric plasticizer toward hydrolysis, and reduced the formation and migration of monomeric degradation products from the blends during aging in water. The combination of branched structure with methyl ester end-groups resulted in a migration resistant polymeric plasticizer.

Poly(vinyl chloride) films plasticized with novel poly‐nadic‐anhydride polyester plasticizers

“…6 , and 682 cm 21 are attributed to CAH stretching vibration, CH 2 deformation, CAH rocking, trans CAH wagging, and CACl stretching, respectively. The peak at 1,731 cm 21 assigned to C@O stretching vibration was observed in plasticized PVC films, which is an important indicator for the presence of ester linkages of the plasticizers in the PVC structure [30,31]. The spectral region of CAH rocking for PVC/ P-MPO-NA, PVC/P-BDO-NA, and PVC/P-DEG-NA occurred at 1,248 cm…”

Flexible and strong ternary blends of poly(vinyl chloride), poly(butylene adipate) and nanoparticle-plasticizers

“…PBA plasticizer can degrade and migrate from PVC during prolonged contact with aqueous solutions [23]. To determine the influence of nanoparticles on the migration behavior of PBA, nanocomposites containing surface treated or untreated nanoparticles were aged in distilled water at room temperature.…”

Response to ‘Dr Raymond David, BASF Corporation’

“…However, in practice polymers with average molecular weight as low as 1000 g/mol is used. Polymeric plasticizers generally make the compounds more difficult to process (Shah andSherdukte 2003, Lindström andHakkarainen 2007). Most of these compounds are experimental (Ferruti et al 2003) and insufficent information is available to assess the use and safety of these compounds in medical devices.…”