Low-molecular-weight glycerol esters as plasticizers for poly(vinyl chloride)

2014 ◽  
Vol 20 (2) ◽  
pp. 65-71 ◽  
Author(s):  
Oscar Yesid Suárez Palacios ◽  
Paulo César Narváez Rincón ◽  
Jean-Pierre Corriou ◽  
Mauricio Camargo Pardo ◽  
Christian Fonteix
Keyword(s):  
Molecular Weight ◽  
Vinyl Chloride ◽  
Low Molecular Weight ◽  
Poly Vinyl Chloride

HIGHLY BRANCHED POLY(BUTYLENE ADIPATE) FOR PVC PLASTICIZATION: SYNTHESIS AND BLEND CHARACTERIZATION

2011 ◽  
Vol 04 (04) ◽  
pp. 361-364 ◽  
Author(s):  
L. ASCIONE ◽  
V. AMBROGI ◽  
M. PANNICO ◽  
C. CARFAGNA ◽  
P. PERSICO
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Molecular Weight ◽  
Vinyl Chloride ◽  
Experimental Results ◽  
Low Molecular Weight ◽  
Poly Vinyl Chloride ◽  
Hyperbranched Poly ◽  
Linear Poly

New formulations of flexible poly(vinyl chloride) (PVC) were obtained by replacing low-molecular weight dioctylphtalate (DOP) with poly(butylene adipate)-based plasticizers, with both linear poly(butylene adipate) (PBA) and hyperbranched poly(butylene adipate) (HPBA). Thermal, physical, mechanical and thermo-mechanical properties of flexible PVC blends containing different percentages of polymeric plasticizers were compared. Experimental results demonstrated that the migration phenomenon could be overcome by using polymeric plasticizers, without compromising the mechanical properties of final products and improving their thermal stability.

Thermal Dehydrochlorination of Poly(vinyl chloride) in Syndiotactic Systems

1992 ◽  
Vol 57 (1) ◽  
pp. 93-106 ◽  
Author(s):  
Jaroslav Burda ◽  
Rudolf Lukáš
Keyword(s):  
Molecular Weight ◽  
Reaction Mechanism ◽  
Hydrogen Chloride ◽  
Vinyl Chloride ◽  
Quantum Chemical ◽  
Low Molecular Weight ◽  
Ionic Mechanism ◽  
Reaction Conditions ◽  
Poly Vinyl Chloride ◽  
Ionic Intermediates

The thermal dehydrochlorination of syndiotactic poly(vinyl chloride) sequences has been studied theoretically on low-molecular weight models ranging from vinyl chloride dimer to pentamer using the semiempirical quantum chemical MNDO method. Parameters obtained with saturated systems and their change caused by the proceeding elimination of hydrogen chloride accompanied by the formation of the corresponding unsaturated structures are discussed with respect to the repeated chloroallyl or α-chloropolyene activation of the dehydrochlorination process. The study of the assumed radical and ionic intermediates is used in discussing the reaction mechanism of dehydrochlorination, and the radical or ionic mechanism is supposed to be operative depending on the reaction conditions.

Sign in / Sign up

Export Citation Format

Share Document