키토산 겔을 이용한 포름알데하이드 차폐 시트 개발

Abstract

Sick-building syndrome occurs when indoor air ispolluted with harmful volatile organic compounds such asformaldehyde which are contained in furniture or new buildingmaterials. In this study, formaldehyde-shielding chitosangelsheet was developed and its performance was evaluated. Chitosan and agar were dissolved in acetic acid solution. Theoptimal concentrations of chitosan, acetic acid and agar were3, 3, and 2.5 %(w/w). Formaldehyde was spreaded on gypsumboard and then wall paper was attached on it by using glue. When chitosan-gel sheet was attached on this control board,the amount of formaldehyde released from the board was decreasedby 63% than in control board. On the other hand, decreasein formaldehyde releasing was only 32% when liquidsolution of chitosan was spreaded on the control board. Thisresult clearly indicates that chitosan-gel sheet removes formaldehydemore effectively than liqud solution of chitosan. Furthermore,this type of sheet is more applicable to new buildingthan spraying type.