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Injection moldable material utilizing shell waste and recycled polyethylene  

Chong, Mie-Hwa (Department of Polymer Engineering, The University of Suwon)
Chung, Yong-Chan (Department of Chemistry, The University of Suwon)
Chun, Byoung-Chul (Department of Polymer Engineering, The University of Suwon)
Cho, Bong-Gyoo (Industrial Waste Recycling R & D Center)
Publication Information
Resources Recycling / v.14, no.3, 2005 , pp. 55-62 More about this Journal
Abstract
Mechanical properties of shell powder containing mixed recycled plastics were investigated depending on the shell content and surface modification. First, shell powder and LDPE were compounded using the twin screw extruder to manufacture 40 wt% master batch(M/B), and the M/B was blended with LDPE to produce bulk specimens with 10, 20, 30 and 40 wt% shell content. To improve the compatibility of shell powder with mixed recycled plastics matrix, surface of shell powder was chemically modified with cations or cationic surfactant. Surface modified shell was also used to prepare bulk specimens with the same shell content. Mechanical property analysis showed obvious improvement for the surface modified shell containing bulk specimens compared to unmodified ones. These results can lead to the development of new applications for the mixed recycled plastics.
Keywords
shell; mixed recycled plastics; master batch; mechanical property; cation;
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