Effect of the matrix plasticization behavior on mechanical properties of PVC/ABS blends

Abstract

<jats:title>Abstract</jats:title> <jats:p>Acrylonitrile-butadiene-styrene (ABS) grafted copolymer prepared by emulsion polymerization was used to modify different molecular weight poly (vinyl chloride) (PVC) resins. The effects of the molecular weight of the PVC resins on dynamic mechanical analyses (DMA) of PVC/ABS blends and matrix plasticizing behavior on the impact mechanical properties and the morphology were investigated. The tan δ peaks of PVC/ABS blends occurred at the same temperature obtained by DMA, indicating that miscibility of PVC/ABS blends was independent of the molecular weight of PVC. The notched Izod impact test results indicated that the amount of polybutadiene (PB) rubber needed for the brittle-ductile transition (BDT) increases together with the molecular weight of PVC when milled at 165°C. Increasing the operation temperature and adding the plasticizer dioctyl phthalate (DOP) could change the matrix plasticizing extent and the BDT. At a milling temperature of 165°C, the BDT was reached only with 3.6 wt% PB when DOP was added, in contrast to the addition of 7.2 wt% PB in the absence of DOP. The morphology of different plasticized degree of PVC/ABS blends was studied by transmission electron microscopy (TEM) showing that the PVC-1/ABS blends milled at 165°C showed a larger unstained area than the other series of PVC blends.</jats:p>

Mechanical, thermal, melt-flow and morphological characterizations of bentonite-filled ABS copolymer

“…Figure 6 showed that BNT inclusions caused shifting of TGA curve of ABS to right side which indicates the enhancement of thermal stability of pristine ABS. Similar findings were observed in the literature that minerals led to increase for degradation temperature of ABS (Xia et al , 2007; Liu et al , 2016; Savas et al , 2019; He et al , 2010). The highest improvement on thermal stability was observed for 15 Wt.% BNT containing composite.…”

Excellent toughness of rigid polyvinylchloride at low temperature improved by polycarbonate‐polydimethylsiloxane block copolymer

“…Core‐shell structure modifiers, such as methacrylate‐butadiene‐styrene terpolymer (MBS), core‐shell acrylate elastomer and acrylonitrile‐butadiene‐styrene terpolymer are distributed in PVC in the form of particles 10–13 . Core‐shell structured particles, which comprise rubbery core and rigid shells, have the distinct advantage of allowing independent control of the composition, morphology, size and properties 10 .…”

“…Core-shell structure modifiers, such as methacrylatebutadiene-styrene terpolymer (MBS), core-shell acrylate elastomer and acrylonitrile-butadiene-styrene terpolymer are distributed in PVC in the form of particles. [10][11][12][13] Coreshell structured particles, which comprise rubbery core and rigid shells, have the distinct advantage of allowing independent control of the composition, morphology, size and properties. 10 When the PVC is impacted, these particles rupture and form holes, which can lead to stress concentration and induce a large number of crazes and shear bands to consume impact energy.…”