Study of selected thermal characteristics of polypropylene/polyethylene binary blends using DSC and TGA

Wong, Ast; Lam, Frank

doi:10.1016/s0142-9418(01)00144-1

Cited by 105 publications

(62 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Doležal et al [23] found that the relative amount of the pyrolysis products of LDPE/PP blends were exponentially dependent on their composition in pyro-GC/MS experiments. Wong and Lam [24] confirmed changes in induction time for degradation of PE/ PP blends.…”

Section: Introductionmentioning

confidence: 74%

Copyrolysis of naphtha with polyalkene cracking products; the influence of polyalkene mixtures composition on product distribution

Hájeková

Mlynková

Bajus

et al. 2007

Journal of Analytical and Applied Pyrolysis

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 74%

Copyrolysis of naphtha with polyalkene cracking products; the influence of polyalkene mixtures composition on product distribution

Hájeková

Mlynková

Bajus

et al. 2007

Journal of Analytical and Applied Pyrolysis

View full text Add to dashboard Cite

“…Although the unit structures of PE and PP, CH 2 CH 2 and CH 2 -CH(CH 3 ), respectively, are very similar to each other, PE and PP blend polymers are immiscible. 7,11,12 Therefore, it is very interesting to investigate if PE and PP have some interactions or not in the PE/PP blends. It is also important to compare the structure, dispersibility, and physical properties among various kinds of PE/PP blends such as HDPE/PP and LLDPE/PP.…”

mentioning

confidence: 99%

Molecular Structure, Crystallinity and Morphology of Polyethylene/Polypropylene Blends Studied by Raman Mapping, Scanning Electron Microscopy, Wide Angle X-Ray Diffraction, and Differential Scanning Calorimetry

Furukawa

Sato

Kita

et al. 2006

Polym J

124

View full text Add to dashboard Cite

ABSTRACT:The present study is aimed at investigating the molecular structure, crystallinity, and morphology of polyethylene (PE) and polypropylene (PP) blends by using Raman mapping, scanning electron microscopy (SEM), wide-angle X-ray diffraction (WAXD), and differential scanning calorimetry (DSC). In this study, three kinds of PEs, high-density polyethylene (HDPE), linear low-density polyethylene (LLDPE), and metallocene polyethylene (MEPE) were used. MEPE is one of the LLDPEs but its density is very low and its melt flow index (MFI) is very high. Blends of each PE and PP with a PP content ranging from 20 to 80 wt % with an increment of 20 wt % were prepared. Raman mapping images and SEM images show that the 80/20 blends of HDPE/PP and LLDPE/PP have similar dispersibility behavior and that only the 80/20 blend of MEPE/PP shows a different behavior in this respect. For the 20/80 blends, the differences are not so large. For the Raman mapping, the intensity ratio of the two bands at 1128 and 974 cm À1 was used. The former is due to a symmetric C-C stretching mode of all-trans -(CH 2 ) n -groups of PE while the latter is assigned to a CH 3 rocking mode of PP. MEPE/PP blends yield quite different X-ray diffraction patterns compared to HDPE/PP and LLDPE/PP blends; the MEPE/PP blends show that with increasing MEPE content the crystalline size of PP become smaller. DSC curves of MEPE/PP show that the peak area changes linearly with the blending ratio and that the crystallization temperature does not change for any blend. These results mean that the density and MFI of PE influences the blend properties.

show abstract

“…Weight loss of a polymer due to thermal degradation is an irreversible process. This thermal degradation is largely related to oxidation whereby the molecular bonds of a polymer are attacked by oxygen molecules [21]. It is found that the char yield of all the samples beyond 570°C was very little, indicating the polymer blends decomposed almost completely at 570°C.…”

Section: Resultsmentioning

confidence: 99%

Effect of secondary forces in the compatibility of two incompatible biodegradable polymers

et al. 2012

View full text Add to dashboard Cite

Poly(ethylene adipate) (PEA) and polytetramethylene ether glycol (PTMEG) were used as compatibilizers in the biodegradable polymer blend of poly(L-lactic acid)/poly(butylene succinate-co-L-lactate) (PLLA/PBSL). The compatibilizers of various contents were incorporated into the blend using a Haake internal mixer. The compatibilization between PEA and PTMEG on the blends was measured using thermogravimetric analysis (TGA), flexural test, field emission scanning electron microscopy (FESEM), and Fourier transform infrared (FTIR) spectroscopy. From the TGA results, it was found that the thermal stability of the blend improved with the addition of PEA. The flexural strength showed a dependency on the extent of the secondary forces interaction between PEA and PTMEG with the blends. This observation corresponded well with the FESEM micrographs. Based on the FTIR analysis, the physical interaction between PEA and PLLA/PBSL was due to the presence of secondary forces.

show abstract

Study of selected thermal characteristics of polypropylene/polyethylene binary blends using DSC and TGA

Cited by 105 publications

References 6 publications

Copyrolysis of naphtha with polyalkene cracking products; the influence of polyalkene mixtures composition on product distribution

Copyrolysis of naphtha with polyalkene cracking products; the influence of polyalkene mixtures composition on product distribution

Molecular Structure, Crystallinity and Morphology of Polyethylene/Polypropylene Blends Studied by Raman Mapping, Scanning Electron Microscopy, Wide Angle X-Ray Diffraction, and Differential Scanning Calorimetry

Effect of secondary forces in the compatibility of two incompatible biodegradable polymers

Contact Info

Product

Resources

About