Functionalization of cyclic natural rubber grafted maleic anhydride (cnr-g-ma) with variation of ma concentration, inisiator and reaction time

Graft copolymers of natural rubber with itaconic anhydride (IA) were prepared in toluene using benzoyl peroxide (BPO) as an initiator. The effects of reaction temperature, reaction time, monomer concentration and initiator concentration on natural rubber grafting were investigated. Graft copolymers (NR-g-IA) were characterized by Fourier transform infrared spectroscopy (FTIR). The grafting content of IA onto NR was estimated by means of FTIR using the absorbance peak ratio for 1783 cm-1 and 835 cm-1, corresponding to the symmetric C=O stretching and the =C-H out of plane bending in natural rubber, respectively. Titration was also used to determine the amount of IA grafted onto natural rubber. The optimal grafting conditions for preparation of NR-g-IA were found at 10 phr IA, 2.5 phr BPO, 85°C temperature, and 2.5 hr reaction time.

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Effect of Isophthalic Acid-Maleic Anhydride (IAMA) as a Compatibilizer on Tensile Properties and Swelling Behavior of Ethylene Vinyl Acetate (EVA)/Natural Rubber (NR)/Potash Feldspar Composites

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.679.76 ◽

2014 ◽

Vol 679 ◽

pp. 76-80

Author(s):

S.H. Ho ◽

A.Ghani Supri ◽

Pei Leng Teh

Keyword(s):

Maleic Anhydride ◽

Natural Rubber ◽

Tensile Properties ◽

Vinyl Acetate ◽

Ethylene Vinyl Acetate ◽

Swelling Behavior ◽

Rotor Speed ◽

Potash Feldspar ◽

Elongation At Break ◽

Lower Elongation

The effect of isophathalic acid-maleic anhydride (IAMA) as a compatibilizer on the tensile properties and swelling behavior of ethylene vinyl acetate /natural rubber/ feldspar (EVA/NR/PF) composites were studied. The EVA/NR/PF composites with and without IAMA were prepared using Brabender Plasticoder at 160oC with 50rpm rotor speed. The results indicated that EVA/NR/PF/IAMA showed higher value of tensile strength and M100 but lower elongation at break and percentage mass swell compared to EVA/NR/PF composites.

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In situ compatibilization of polyamide 6/natural rubber blends with maleic anhydride

Polymer ◽

10.1016/s0032-3861(99)00800-9 ◽

2000 ◽

Vol 41 (15) ◽

pp. 5929-5935 ◽

Cited By ~ 88

Author(s):

E Carone ◽

U Kopcak ◽

M.C Gonçalves ◽

S.P Nunes

Keyword(s):

Maleic Anhydride ◽

Natural Rubber ◽

Polyamide 6 ◽

Rubber Blends ◽

In Situ Compatibilization

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Effect of Filler Loading and Isophthalic Acid-Maleic Anhydride (IAMA) on Properties of Ethylene Vinyl Acetate/Natural Rubber/Potash Feldspar (EVA/NR/PF) Composites

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.695.60 ◽

2014 ◽

Vol 695 ◽

pp. 60-63

Author(s):

Shuh Huey Ho ◽

A.Ghani Supri ◽

Pei Leng Teh

Keyword(s):

Tensile Strength ◽

Maleic Anhydride ◽

Natural Rubber ◽

Tensile Properties ◽

Vinyl Acetate ◽

Ethylene Vinyl Acetate ◽

Isophthalic Acid ◽

Filler Loading ◽

Rotor Speed ◽

Potash Feldspar

The EVA/NR/PF composites with and without IAMA were prepared using Brabender Plasticoder at 160oC with 50rpm rotor speed. The effects of potash feldspar loading and isophathalic acid-maleic anhydride (IAMA) on the tensile properties and morphology analysis of EVA/NR/PF composites were studied. The results indicated that tensile strength for EVA/NR/PF and EVA/NR/PFIAMA composites decreased but M100 increased as the filler loading increased. EVA/NR/PFIAMA composites showed higher value of tensile strength and M100.

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