Physical, mechanical, and thermal properties of PVC/PMMA blends in relation to their morphologies

Chakrabarti, Rupa; Das, Mahuya; Chakraborty, Debabrata

doi:10.1002/app.20621

Cited by 56 publications

(39 citation statements)

References 15 publications

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“…Figure 5 exhibits the shore D hardness of rigid and plasticized PVC/PMMA blends. It can be seen that the shore D hardness is influenced by the rigidity of PMMA; it increases almost linearly and progressively with increasing the amount of PMMA [17] . However the presence of the plasticizer decreases it strongly because of the flexibility of the polymeric chains.…”

Section: Mechanical Propertiesmentioning

confidence: 97%

The effect of di-(-2-ethyl hexyl) phthalate (Dehp) as plasticizer on the thermal and mechanical properties of pvc/pmma blends

et al. 2014

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Plasticizers play a key role in the formulation of polymers and in determining their physical properties and processability. This study examines the effect of di(2-ethyl hexyl)phthalate (DEHP) as plasticizer on the thermal and mechanical properties of PVC/PMMA blends. For that purpose, blends of variable composition, from 0 to 100 wt%, were prepared in the presence (15, 30 and 50 wt %) and in the absence of di(2-ethyl hexyl)phthalate. The thermal degradation of the blends was investigated by thermogravimetric analysis (TGA) in an atmosphere of synthetic air in the temperature range of 50-550°C. The variation of the mechanical properties, such as tensile behavior, hardness and impact resistance, were investigated for all blend compositions. The effect of the plasticizer on the same properties was considered. The results obtained show that a range of properties can be generated according to the blend compositions. Therefore, the addition of PMMA to the blends stabilized PVC, for the initial thermal degradation, and the addition of the plasticizer caused a decrease of stress at break and Young modulus.

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Section: Mechanical Propertiesmentioning

confidence: 97%

The effect of di-(-2-ethyl hexyl) phthalate (Dehp) as plasticizer on the thermal and mechanical properties of pvc/pmma blends

et al. 2014

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“…Paul and Barlow4 have suggested that the α hydrogen of PVC can interact with the ester carboxylate group (H bond acceptor of the acrylic polymer) to form hydrogen bond and is also a key factor in achieving miscibility 5. Also, there is a probability of interaction between the CCl dipole of PVC and the α hydrogen of the acrylate ester 6. These two phenomena can account for increased strength of the IPNs and thus interpenetrating networks of PVC and PBA can be expected to display improved tensile as well as toughness behavior.…”

Section: Introductionmentioning

confidence: 99%

Modification of the mechanical and thermal properties of PVC by semi IPN formation with poly(butyl acrylate)

Chakrabarti

Chakraborty

2008

J of Applied Polymer Sci

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Semi1 and semi2 interpenetrating polymer networks of poly(vinyl chloride) PVC and in situ formed poly(butyl acrylate) (PBA) have been synthesized and characterized using diallyl phthalate (DAP) and ethylene glycol dimethacrylate (EGDM) as the crosslinkers of PVC and PBA, respectively. These two types of IPNs have been compared with respect to their mechanical and thermal properties. The semi1 IPNs displayed a decrease in their mechanical parameters and the physical properties as well, while in contrast, the semi2 IPNs exhibited a marginal increase in the corresponding values when compared to the crosslinked PVC in the case of semi1 IPN and linear PVC in case of semi2 IPN. The representative samples of semi1 and semi2 IPNs revealed a two-stage-degradation typical of PVC while confirming the increased stability of the samples with higher onset temperature of degradation. The softening characteristics as detected by thermomechanical analysis are in conformity with their mechanicals.

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“…This is a consequence of a radical mechanism involving the formation of chlorine radical species that fail to form HCl as it interacts with the PMMA. Secondly, even if HCl is produced, again the interaction with PMMA generates anhydrides and metal chlorides that participate in the mechanism of neutralization . The second degradation stage, due to the scission of the polyenes resulting from the first degradation step, starts near to the random degradation of PMMA .…”

Section: Resultsmentioning

confidence: 99%

The effect of layered double hydroxides dispersion on thermal and mechanical properties of poly(vinyl chloride)/poly(methyl methacrylate) blends

Amaro

Coiai

Conzatti

et al. 2013

Polymer International

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Poly(vinyl chloride) (PVC)/layered double hydroxide (LDH) composites and PVC/poly(methyl methacrylate) (PMMA)/LDH composites were prepared via solution intercalation into PVC using both unmodified and organo‐modified LDHs and variable‐molecular‐weight PMMA as additional components. The LDH dispersion was investigated using X‐ray diffraction analysis and electron microscopy in scanning and transmission modes. Spotlight fourier transform infrared (FTIR) chemical imaging analysis was also used to obtain a deeper insight into the dispersion of polymer phases and LDH segregation. Thermal properties were determined using thermogravimetric analysis and differential scanning calorimetry; moreover, a preliminary investigation of mechanical properties in tensile mode and evaluation of the Vicat softening temperature were carried out. The morphological analysis of PVC/LDH and PVC/PMMA/LDH composites evidenced in both cases the presence of disordered micro‐aggregates with loss of the LDH crystallographic symmetry depending on the amount and molecular weight of PMMA. In particular, in the case of PVC/PMMA/LDH composites, the FTIR imaging analysis showed that PMMA mostly segregated in the LDH phase. However, even if the degree of LDH dispersion was not elevated (micro‐aggregates with disordered structures and size ranging from 0.5 up to 11 µm were evidenced), thermal stability and mechanical properties of the composites were improved with a synergic effect of PMMA and LDH. © 2013 Society of Chemical Industry

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Physical, mechanical, and thermal properties of PVC/PMMA blends in relation to their morphologies

Cited by 56 publications

References 15 publications

The effect of di-(-2-ethyl hexyl) phthalate (Dehp) as plasticizer on the thermal and mechanical properties of pvc/pmma blends

The effect of di-(-2-ethyl hexyl) phthalate (Dehp) as plasticizer on the thermal and mechanical properties of pvc/pmma blends

Modification of the mechanical and thermal properties of PVC by semi IPN formation with poly(butyl acrylate)

The effect of layered double hydroxides dispersion on thermal and mechanical properties of poly(vinyl chloride)/poly(methyl methacrylate) blends

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