현재 도로나 보도의 포장은 콘크리트 포장, 아스콘 포장, 석재 포장, 자갈 포장, 흙 포장, 목재 포장, 우레탄 포장, 고무칩 포장, 블록 포장 등이 시공되고 있으며, 그 중 수지와 합성고무 칩 또는 우레탄 칩 등을 혼합한 다양한 재질의 탄성포장재 가 주로 사용되어지고 있다. 이러한 탄성포장재는 탄성이 좋고 사용성이 좋으나, 2000년대 들어서면서 화학제품에 대한 환경유해성 논란이 대두됨에 따라 탄성 포장재에 대한 환경문제가 제기되었다. 따라서 이 연구에서는 친환경 소재인 알톱밥과 EPDM 칩을 사용하여 친환경 포장재의 개발을 목적으로 하였다. 휨강도 시험, 인장강도 및 신장률 시험, 투수성 시험, 중금속 및 유해 화학물질 총량 시험, 폼 알데하이드 방출량 시험, 경제성 분석을 통해 탄성 포장재에 대한 한국산업규격 KS F 3888-2 및 기존 논문들과 비교 분석하여 이 연구에서 제시한 포장재의 역학적 특성과 환경 유해성 물질 기준을 제시하였다.

Purpose : Ophthalmic soft contact lens using functional silicone monomer were manufactured and the physical properties of copolymerized materials were analyzed. Methods : The materials for ophthalmic hydrogel contact lenses were polymerized by adding 1,3-bis(TDS) and acrylated poly-(dimethyl siloxane) to DMA, HEMA and cross-linking agent(EGDMA) which are commonly used in ophthalmic hydrogel contact lenses. The hydrogel ophthalmic lens was manufactured by cast mould method. The manufactured ophthalmic hydrogel contact lenses were stored in a 0.9% NaCl normal saline for 24 hrs. And also, for the utility of functional silicone monomer as a high gas permeability and visible light transmittance material for ophthalmologic devices, the oxygen permeability, spectral transmittance and water contact were measured. Results : The value of oxygen permeability ranges from 16.83 to 36.59 x    ×     sec ×  ×   . The results showed that the average value of water content decreased as the ratio of additive increased. The visible light tansmittance of copolymerized ophthalmic soft contact lenses, was in the range 89~ 92%. Conclusions : The material containing acrylate poly-(dimethyl siloxane) and methacrylate siloxane is expected to be used usefully as a material for high oxygen permeability hydrogel contact lens.

To prepare a solution type acrylic pressure-sensitive adhesive, quarter polymers were synthesized from butyl acrylate(BA), 2-ethylhexylacrylate(2-EHA) as a base monomer, methyl methacrylate(MMA) as a comonomer, each of methacrylic acid(MAA), acrylic acid(AA) as a functional monomer. Acrylic solution type pressure-sensitive adhesives(PSA's) of isocyanate derivative crosslinking PSA's were prepared by crosslinking of BEMM, BEMA with toluene-2,4-diisocyanate. The structure of adhesive was identified by FT-IR. The viscosity was measured by using Brookfield DV-III and molecular weight was measured by using gel permeation chromatography. The physical properties of polyethylene film coated with BEMMT, BEMAT were measured as a function of the concentration. As the result, BEMMT(0.6, 0.8), BEMAT(0.6) showed peel adhesion of 160~180 gf/25 mm width and shear adhesion of more than 24 hours, and tackiness of 4/32~6/32 which was relevant to commercial usage.