Polypropylene–clay blends compatibilized with MAH‐g‐POE

Zhong, Weixia; Qiao, Xiuying; Sun, Kang; Zhang, Guoding; Chen, Xiao

doi:10.1002/app.22880

Cited by 27 publications

(10 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The compatibilization of MAH-g-POE in PP-clay systems containing a fixed 5 wt % loading of clay was discussed and investigated in our previous work. 15 Studies showed that the use of MAH-g-POE as a compatibilizer could better the dispersion of clay layers in PP matrix, and the resultant nanocomposites exhibited both improved stiffness and toughness. Furthermore, MAH-g-POE was well miscible with the PP matrix, even with the concentration up to 20 wt %, in view of scanning electron microscopy (SEM) and dynamical mechanical thermal analyzer (DMTA) observations.…”

Section: Introductionmentioning

confidence: 98%

Effects of clay contents on the dynamic mechanical and rheological properties of polypropylene/MAH‐g‐POE/clay composites

Qiao

Zhong

Kim

et al. 2009

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

A series of polypropylene/maleic anhydride grafted polypropylene octane elastomer (MAH-g-POE)/clay (PPMC) nanocomposites were prepared with a novel compatilizer MAH-g-POE and different contents of octadecyl amine modified montmorillonite, and the effects of clay contents on the dynamic mechanical and rheological properties of these PPMC composites were investigated. With clay content increasing, the characteristic X-ray diffraction peak changed from one to two with intensity decreasing, indicating the decreasing concentration of the intercalated clay layers. The gradual decrease of crystallization temperature of PPMC composites with the increase of clay loading should be attributed to the preferred intercalation of MAH-g-POE molecules into clay interlayer during blending, which is also reflected by scanning electron microscopy observations. By evaluating the activation energy for the glass transition process of MAHg-POE and polypropylene (PP) in the PPMC composites, it is found that clay intercalation could cause the restriction effect on the glass transition of both MAH-g-POE and PP, and this restriction effect appears stronger for PP and attained the highest degree at 5 wt % clay loading. The melt elasticity of PP could be improved apparently by the addition of MAH-g-POE, and 5 wt % clay loading is enough for further enhancing the elastic proportion of PP.

show abstract

Section: Introductionmentioning

confidence: 98%

Effects of clay contents on the dynamic mechanical and rheological properties of polypropylene/MAH‐g‐POE/clay composites

Qiao

Zhong

Kim

et al. 2009

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

show abstract

“…The toughness of PP could be improved with the addition of elastomer at the expense of its strength. To address these concerns, PP/clay nanocomposites have been studied for several years as a solution 6–17. However, it is still a challenge to prepare PP/clay nanocomposites with well‐exfoliated structures.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties, morphology, and crystal structure of polypropylene/chemically modified attapulgite nanocomposites

Chen

Zhu

et al. 2011

J of Applied Polymer Sci

View full text Add to dashboard Cite

Atactic polypropylene (aPP) was chemically grafted onto attapulgite (ATP) via the bridge linking of a polymerizable cationic surfactant and poly(octadecyl acrylate) in the presence of ultrasonic oscillation and dicumyl peroxide, and then, the modified ATP was added to a polypropylene (PP) matrix to obtain PP nanocomposites by melt blending. The results of Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy confirmed that aPP and poly(octadecyl acrylate) were chemically grafted onto ATP through a graft polymerization reaction. The results of the mechanical properties testing showed that the addition of modified ATP improved the toughness and strength of PP remarkably. The dynamic mechanical analysis indicated that the modified ATP significantly increased the storage modulus and decreased the glasstransition temperature of PP. The results of scanning electron microscopy and transmission electron microscopy showed that the modified ATP was uniformly dispersed into the PP matrix as crystal needles; this proved the presence of strong interactions between modified ATP and PP. The crystal structure analysis revealed that the b-form crystalline of PP was formed within the modified ATP.

show abstract

“…However, as in other publications, the dynamic behavior was found to depend on the type of intercalant and compatibilizer as well as their amounts. Thus, the relative storage modulus of PP-based CPNC (with 5 wt% MMT-ODA and 0 to 20 wt% compatibilizer) was: E ′ r = 0.89 to 1.2 and 0.95 to 1.6 at −68 and +124 • C, respectively [Zhong et al, 2006]. Similarly, E ′ r of CPNC of PP + PP-MA + 10 wt% MMT-ODA decreased with T, converging from widely different values at −30 to a single value at 170 • C [Wang et al, 2006].…”

Section: Nanocomposites With a Semicrystalline Matrixmentioning

confidence: 99%