Modification and Properties of Polyolefin with Maleic Anhydride as a Functional Monomer

Abstract

ABSTRACT：Surface modification of macromolecules renders a progressive and favorable method to enhance the properties of polymeric materials and improves conductivity, wettability, stability, adhesion, antibacterial properties, etc. of polymeric surfaces without deterioration of the polymer bulk properties. Polyolefins such as polyethylene and polypropylene were grafted with maleic anhydride(MAH) as a functional monomer in solution. Evidence for grafting was shown with FTIR measurement. The grafting ratio was determined from chemical titration. The higher MAH loading, the lower contact angle() was obtained. With the increasing content of MAH, melting temperature(Tm) of maleic anhydride grafted polymer decreased while decomposition temperature(Td) of maleic anhydride grafted polymer increased.

Functionalization in solution of polypropylene with a maleinized hyperbranched polyol polyester: Structural, thermal, rheological, and mechanical properties

“…This is associated with the high number of free radicals, which may react with the PP and MHBP and so enhance FD. The same behavior has been observed for the functionalization of PP with MA in solution . PP‐ g ‐MHBPs prepared with 3.0 wt % (PP‐ g ‐MHBP1, PP‐ g ‐MHBP2 and PP‐ g ‐MHBP3) MHBP exhibited lower FD than those obtained with 9.0 wt % (PP‐ g ‐MHBP4, PP‐ g ‐MHBP5 and PP‐ g ‐MHBP6).…”

“…Another study reported the functionalization of MA (3.0 wt %) in solution, using dicumyl peroxide (DCP) as an initiator (0.10–0.80 wt %); the FD values were between 0.27 and 0.34 wt % . PP was functionalized with MA in solution by employing benzoyl peroxide (BPO) as a catalyst (1.0 wt %); the proportions of MA employed were between 10 and 20 wt % and the FD values obtained were between 0.10 and 3.0 wt % …”

Use of a bis(aminoalkyl)‐calix[4]arene derivative as cross‐linking agent to enhance functional and mechanical properties of a maleated polypropylene

“…[5][6][7] After the pioneer work of Minoura et al in 1969, 8,9 several researchers successfully grafted MAH groups onto iPP chains and analyzed their impact on the polymer properties. [10][11][12][13][14][15][16][17][18] Otherwise some authors studied the reaction of excess diamines in iPP-g-MAH systems and concluded that primary amines favor chain grafting. [19][20][21] More advanced workers analyzed on the influence of NH 2 :MAH molar ratio on the macromolecular architecture, the cross-link density, the semi-crystalline microstructure and the mechanical properties.…”