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Study on Preparation of A New Type of Macromolecular Compatibilizer and Its Compatibilization Ability

Author: JiangZuo
Tutor: TaiLiMin
School: Liaoning Technical University
Course: Materials Science
Keywords: Prepolymer Starch Polyethylene Polystyrene Compatibilizer
CLC: TQ314.24
Type: Master's thesis
Year: 2009
Downloads: 87
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Abstract


Polyolefin is representative of the polarity of the polymer is generally weak , while the starch is usually constituted by macromolecules and branched -shaped molecules strongly polar polymers, the two substances are incompatible in the molecular level within the scope of direct Total mixed will often result in a serious deterioration of the physical properties of the blend . To resolve this problem , you need to be added to the system compatibilizer to improve compatibility . The purpose of this project is to prepare some kind of compatibilizer its interface compatibility , to enable them to improve in weakly polar polymer polyolefin and starch mutual strong polar polymer blends . A compatibilizing agent prepared in the experiments with other types of compatibilizing agent is different in that its preparation process increases the prepolymer step , increasing the graft - active points , to improve compatibilization performance . Experimental starch respectively with a blend of polyethylene and polystyrene , for example, first preparing the prepolymer of maleic anhydride / methyl methacrylate prepolymers , and acrylic acid / methyl methacrylate , and by infrared spectroscopy and gas chromatography qualitative and quantitative analysis of prepolymer ; then both the prepolymer by a certain percentage with polyethylene and polystyrene blends , respectively , and its blend is the desired compatibilizer; the resulting two compatibilizer by a certain percentage were added to the starch / polyethylene and starch / polystyrene blend by a single screw extruder , extrusion molding , the products were detected by scanning electron microscopy , thermal analysis , and mechanical properties test machine . The results show that added compatibilizing agent starch / polyolefin blends better than plus compatibilizer starch / polyolefin blend , the compatibilization effect of maleic anhydride compatibilizing agent is slightly better than the acrylic type solubilizing Yung agent. Prepolymers compatibilizer blends of different polarities can prove method is indeed effective, and the different types of prepolymers compatibilizer compatibilizer there are different , this is for the future preparation of the novel reactive polymer compatibilizer pointed out a new path .

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CLC: > Industrial Technology > Chemical Industry > Molecular compound Industries ( polymer industry ) > Raw materials and auxiliary materials > Synthetic polymer compound > Additives
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