In this study, isotactic polybutene-1 (iPB) was functionalized with glycidyl methacrylate (GMA) using di-tert-butyl peroxide as an initiator via a radical-initiated melt grafting reaction, while styrene (St) was used as a comonomer to enhance the grafting reaction. The effect of temperature, concentration of initial GMA and peroxide, and the addition of St comonomer on the final grafting degree, grafting efficiency, and the melt flow rate of the grafted polymer were studied. The results indicated that St was an effective comonomer. Moreover, the GMA grafted iPB had higher crystallization temperature and faster crystallization rate compared with the unmodified iPB based on the differential scanning calorimetric tests.
XieXMChenNHGuoBHLiS. Study of multi-monomer melt-grafting onto polypropylene in an extruder. Polym Int2000; 49: 1677–1683.
2.
De RooverBSclavonsMCarlierVDevauxJLegrasRMomtazA. Molecular characterization of maleic anhydride-functionalized polypropylene. J Polym Sci A: Polym Chem1995; 33: 829–842.
3.
BettiniSHPAgnelliJAM.Grafting of maleic anhydride onto polypropylene by reactive processing. I. Effect of maleic anhydride and peroxide concentrations on the reaction. J Appl Polym Sci1999; 74: 247–255.
4.
LiuNCBakerWE. Basic functionalization of polypropylene and the role of interfacial chemical bonding in its toughening. Polymer1994; 35: 988–994.
5.
VainoTHuGHLamblaMSeppalaJV. Functionalized polypropylene prepared by melt free radical grafting of low volatile oxazoline and its potential in compatibilization of PP/PBT blends. J Appl Polym Sci1996; 61: 843–852.
6.
SunYJHuGHLamblaMKotlarHK. In situ compatibilization of polypropylene and poly (butylene terephthalate) polymer blends by one-step reactive extrusion. Polymer1996; 37: 4119–4127.
PesetskiiSSJurkowskiBMakarenkoOA. Free radical grafting of itaconic acid and glycidyl methacrylate onto PP initiated by organic peroxides. J Appl Polym Sci2002; 86: 64–72.
9.
HuangHLiuNC. Nondegradative melt functionalization of polypropylene with glycidyl methacrylate. J Appl Polym Sci1998; 67: 1957–1963.
10.
TorresNRobinJJBoutevinB. Functionalization of high-density polyethylene in the molten state by glycidyl methacrylate grafting. J Appl Polym Sci2001; 81: 581–590.
11.
ChoKYEomJYKimCHParkJK. Grafting of glycidyl methacrylate onto high-density polyethylene with reaction time in the batch mixer. J Appl Polym Sci2008; 108: 1093–1099.
12.
HuGHCartierH. Styrene-assisted melt free radical grafting of glycidyl methacrylate onto an ethylene and propylene rubber. J Appl Polym Sci1999; 71: 125–133.
13.
ZhangXMYinZHLiXYinJH. Grafting of glycidyl methacrylate onto ethylene-propylene copolymer: preparation and characterization. Appl Polym Sci1996; 61: 2253–2257.
14.
Di LorenzoMLRighettiMC. The three-phase structure of isotactic poly (1-butene). Polymer2008; 49: 1323–1331.
15.
NakataniHIchizyuTMiuraHTeranoM. Preparation of modified polybutene-1 by oxidation and limonene radical grafting using an Nd2O3-assisted radical initiator system and its characterization. Polym Int2010; 59: 1673–1682.
16.
ZhouYFZhaoYXYaoWHuangBC. Styrene-assisted melt-free radical grafting of glycidyl methacrylate onto poly (1-butene). Polym Eng Sci2011; 51: 1669–1674.
17.
MoadG. The synthesis of polyolefin graft copolymers by reactive extrusion. Prog Polym Sci1999; 24: 81–142.
18.
LamblaM. Reactive extrusion: a new tool for the diversification of polymeric materials. Macromol Symp1994; 83: 37–48.
19.
AzzurriFFloresAAlfonsoGCBalta CallejaFJ. Polymorphism of isotactic poly(1-butene) as revealed by microindentation hardness. 1. Kinetics of the transformation. Macromolecules2002; 35: 9069–9073.
20.
HuYLQiaoJLLvLX. Functionalization and modification of polyolefins science and technology. Beijing, China: Chemical Engineering Press, 2005.
21.
RuanJMPanYKChenQZhouDF. Studies on solid-phase grafting of GMA onto PP. Polym Mater Sci Eng1999; 15: 80–83.
22.
ChenLFWongBBakerWE. Melt grafting of glycidyl methacrylate onto polypropylene and reactive compatibilization of rubber toughened polypropylene. Poly Eng Sci1996; 36: 1594–1607.
23.
JiaDMLuoYFLiYMLuHFuWCheungWL. Synthesis and characterization of solid-phase graft copolymer of polypropylene with styrene and maleic anhydride. J Appl Polym Sci2000; 78: 2482–2487.
