No abstract

Waste polyethylene (WPE) was segregated from the municipality solid waste, cleaned, dried, and chopped into pieces, then processed in a Brabender Plasticorder using the melt mixing technique. Blends of WPE and virgin polyethylene were prepared in various proportions under optimized process conditions. Of the various blend proportions studied, 70/30 blend of WPE/low density polyethylene (LDPE) and 50/50 blend of WPE/high density polyethylene showed better mechanical properties and hence selected for further modification involving electron beam irradiation. Aforementioned blends were exposed to various doses of electron beam irradiation and the effect of irradiation on physicomechanical properties such as tensile strength, flexural modulus, hardness, and impact resistance were studied. Thermogravimetric analysis, X-ray diffraction studies, Fourier transform infrared spectroscopy, scanning electron microscopy, and gel content were considered to characterize the blends. Physicomechanical properties improved to an appreciable extent on irradiation but the elongation at break reduced drastically. Blow molding of the 70/30 WPE/LDPE blend could be done successfully to make bottles.

We generalize the concept of bags by introducing the notion of n k -bags with membership functions ranging in P~N !, the power set of positive integers. Consequently, a number of operations on n k -bags are defined and some characterizations are done.

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In the present paper, the author introduces the notion of fuzzy IC-bags and does some characterizations of them. The concepts of fuzzy base sets, base equivalent fuzzy IC-Bags, cardinally equispaced fuzzy IC-Bags, and cardinally equivalent fuzzy IC-Bags have been developed. The types of peak elements, and the concerned types of peak membership grades have been discussed. It is observed that the collection of any particular type of peak elements together with their membership grades actually form fuzzy bags. A set of operations on fuzzy IC-Bags have been defined and some propositions have been proved. We note that under the conditions of uncertainty, where the counts of objects are not fixed, then the interval counts can occur with different fuzzy membership grades for each particular object in the collection, and the framework for fuzzy IC-Bags provides us with the opportunity to justify and model the organized complexity as a part of the associated intolerance embedded in the subjective patterns.