scholarly journals Organically Modified Montmorillonite as Nanoreactor to Improve the Grafting Degree of Maleic Anhydride onto Polypropylene

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Zhenghui Li ◽  
Peijie Yu ◽  
Lu Chen ◽  
Lingli Zhang ◽  
Hongyu Hu
Keyword(s):  
Maleic Anhydride ◽  
Gel Permeation Chromatography ◽  
Reactive Extrusion ◽  
Extrusion Process ◽  
Active Species ◽  
Strong Interactions ◽  
Modified Montmorillonite ◽  
Organically Modified Montmorillonite ◽  
Organically Modified ◽  
Grafting Degree

The application of an organically modified montmorillonite nanoreactor in the reactive extrusion process of the free radical grafting of maleic anhydride onto polypropylene (PP) can increase the MAH grafting degree on the PP. The mechanism of grafting was studied by using transmission electron microscopy and high temperature gel permeation chromatography. It was found that both the strong interactions between MAH and MMT surface and the encapsulation effect of active species confined in o-MMT improved the grafting degree.

Biodegradable Polyester / Layered Silicate Nanocomposites

2002 ◽  
Vol 740 ◽  
Author(s):  
Pralay Maiti ◽  
Carl A. Batt ◽  
Emmanuel P. Giannelis
Keyword(s):  
Mechanical Properties ◽  
Storage Modulus ◽  
Layered Silicate ◽  
Layered Silicates ◽  
Melt Extrusion ◽  
Biodegradable Polyester ◽  
Modified Montmorillonite ◽  
Organically Modified Montmorillonite ◽  
Silicate Nanocomposites ◽  
Organically Modified

ABSTRACTNanocomposites of α-hydroxy polyester, polylactide (PLA) and β-hydroxy polyester, polyhydroxybutyrate (PHB) with layered silicates have been successfully prepared by melt extrusion of PLA and PHB with organically modified montmorillonite (MMT) and fluoromica. The mechanical properties of the nanocomposites are improved compared to the neat polymers. Storage modulus increase up to 40% compared with the pure polymers by adding only 2–3 wt% nanoclay. Biodegradation can be controlled by the choice of the nanoclay used.

Thermal characterization of organically modified montmorillonite

2001 ◽  
Vol 367-368 ◽  
pp. 339-350 ◽  
Author(s):  
Wei Xie ◽  
Zongming Gao ◽  
Kunlei Liu ◽  
Wei-Ping Pan ◽  
Richard Vaia ◽  
...  
Keyword(s):  
Thermal Characterization ◽  
Modified Montmorillonite ◽  
Organically Modified Montmorillonite ◽  
Organically Modified

Optimisation of the ceramic-like body for ceramifiable EVA-based composites

2017 ◽  
Vol 24 (4) ◽  
pp. 599-607 ◽  
Author(s):  
Xinhao Gong ◽  
Tingwei Wang
Keyword(s):  
Ceramic Body ◽  
Ethylene Vinyl Acetate ◽  
Melt Blending ◽  
Red Phosphorus ◽  
X Ray Diffraction ◽  
Modified Montmorillonite ◽  
Organically Modified Montmorillonite ◽  
Organically Modified ◽  
Dense Ceramic ◽  
Acetate Copolymer

AbstractVarious ceramifiable ethylene-vinyl acetate copolymer (EVA) composites were prepared by melt blending with two kinds of glass frits, organically modified montmorillonite (OMMT) and whitened and capsulised red phosphorus (WCRP). The influence of different filler components and firing temperatures on the ceramifiable properties of the composites was studied. The dripping behaviour of the composites was analyzed by a vertical burning test. The microstructure of the residues was characterised by X-ray diffraction (XRD) and scanning electron microscopy. The results showed that the optimised EVA composite was free of melt dripping during burning with the addition of OMMT. A dimensionally stable and dense ceramic residue was also obtained, especially with the addition of WCRP. It was suggested that new phases were formed at firing temperatures, and WCRP could promote the formation of ceramic body which was not fused during firing at 900°C as evidenced by XRD.

Sign in / Sign up

Export Citation Format

Share Document