Feasibility Study on Improving Compatibility of Polyethylene Wax by Grafting with Maleic Anhydride in the Presence of Several Organic Peroxide Initiators

다국어 초록 (Multilingual Abstract)

In order to study the functional enhancement of waste olefin polymers needed for recycling them such as compatibility with other polymers and pigments, dyeing it with dyestuffs, and adhesion and cross-linking to other metals, polyamides, and glasses, etc., this work employs polyethylene wax as a sample waste olefin polymer. The wax then has been grafted with maleic anhydride in a four-neck flask reactor equipped with a nitrogen purger, a vapor condenser, and a temperature controlled heater. With different organic peroxides such as dicumyl peroxide, di-tert-butyl peroxide, and benzoyl peroxide the wax was grafted with maleic anhydride and its degree of grafting was compared with the result for azo-bis-isobutyl nitrile, a non-peroxide. With di-cumyl peroxide as an initiator, the carbonyl group intensities at both 1861 and 1784cm-1 in the FT infrared spectroscopy for the grafted products, have revealed that the absorbance was over fifty percent more than that of di-tert-butyl peroxide, the second best initiator. The initiator content, the weight ratio, and the reaction temperature were varied from 0.06 to 0.375 weight percents of the total reaction volume, from 1.8 to 7.2 of maleic anhydride to polyethylene wax, and from 120 to 150℃, respectively, for all the above reactions. The acid titration of the grated wax with potassium hydroxide to measure the rate of the grafting suggests that the rate has almost the same order of magnitude where the percentage of maleic anhydride weight per volume is higher than 4.5. The result is the minimal required amount of the grafting agent, the maleic anhydride.

목차 (Table of Contents)

• I.INTRODUCTION
• II.Materials and Methods
• III. RESULTS & DISCUSSION
• IV.CONCLUSIONS