망고는 호광성 작물로써 많은 광을 필요하나 대부분의 농가에서는 하우스 내 밀식재배를 하기 때문에 수관내부의 광이 부족하여 생육이 잘 이루어지지 않고 과실의 착색 및 품질이 떨어지고 있다. 따라서 본 연구는 망고 하우스 내 토양에 다공질필름을 피복하여 수관하부의 광 환경을 개선하여 과실 품질 및 착색을 향상 시키며, 생육 시기별 피복 시기를 달리 하여 생육 별 피복 처리의 효과를 구명하고자 수행되었다. 1. 다공질필름 피복 처리 효과 1) 다공질필름 피복에 대한 광반사율은 대조구에 비해 처리구가 높았다. 2) 과중 및 가용성 고형물 함량의 변화에는 대조구에 비해 처리구가 높게 나타났으며 산 함량에는 유의 차가 인정되지 않았다. 3) 과피의 착색 정도에는 피복 처리가 대조구에 비해 착색이 잘 되었다. 2. 다공질필름 피복 시기별 처리 효과 1) 만개 후 5일부터 피복 처리를 했을 경우가 과중 및 가용성 고성물 함량이 높게 나타났으며, 산함량 및 과피의 착색정도에는 유의차가 인정되지 않았다. 2) 과실의 유리당 함량은 sucrose, fructose, glucose 순으로 많았으며, sucrose는 가용성 고형물 함량과 마찬가지로 만개 후 5일부터 피복했을 경우 높게 나타났다. 3)피복 시기에 따른 유기산 함량의 변화에는 유의차가 인정되지 않았다.

EMA-co-DAMA were synthesized from 2-diethylaminoethyl metacrylate and ethylhexyl metacrylate in acrylmonomer. To facilitate water emulsification, acrylic copolymer was cationized by acetic acid to produce acetated acrylic copolymer. The structures of the synthesized copolymer and acetated copolymers were confirmed by IR, NMR, and molecular weight was measure by GPC, and C.H.N elemental analysis. Acetated acrylic copolymers were perfectly emulsified in water and showed increased emulsion stability. Polymer dispersion for cement modifier[(PDCM-PED) water proof agent of cement for concrete in building construction] was prepared by blending of the guaternized acrylic copolymer syndisized above, sodium silicate, sodium gluconate and oleic acid emulsion. The result with prepared polymer dispersion of cement modifier was examined, and it was found that excellent waterprooffing effect ; Water permeability ratio is 0.50 under the water pressure of 100g/cm2 and 0.60 under 3kg/cm2, and water absorption ratio is 0.42~0.50 and 1.0~1.02 compressive strength ratio at mixed of water/PDCM-PED is 50 times.

This study is to review its possibility of recycling, subject for Polyolefine (TPO) and Polyvinyl Chloride (PVC) among thermoplasticity plastic raw materials, of which recycling is possible. Wasted vinyl and processing by-products have been used for Polyolefine (TPO), and coating from used cable and its by-products used for Polyvinyl Chloride (PVC). The study result is shown as following. (1) In case of Polyolefine (TPO), superior property has been shown, when mixed with raw materials, as the property of by-products is excellent. For Polyvinyl Chloride (PVC), property in the same level as raw materials has been shown up to 50% of by-products mixing rates. (2) In case of coating from the used cable, the property as exactly same as raw materials without property loss has been shown since long time passed, with using highquality raw materials at that time of manufacture.