Suspension polymerization of poly(methyl methacrylate)

소개글

Suspension polymerization of poly(methyl methacrylate)에 대한 보고서 자료입니다.

목차

1. Title

2. Principle

3. Apparatuses and Reagents

4. Procedure

5. Result

6. Error & cause

7. Discussion

8. Reference

본문내용

e in the treatment of most forms of acne. It is typically placed over the affected areas in gel or cream form, in concentrations of 2.5% increasing through the usually effective 5% to up to 10%. Research suggests that 5 and 10% concentrations are not significantly more effective than 2.5% and 2.5% is usually better tolerated.[1][2] It commonly causes initial dryness and sometimes irritation, although skin tolerance usually occurs after a week or so. A small percentage of people are much more sensitive to it and liable to suffer burning, itching, peeling and possibly swelling[3]. It is sensible to apply the lowest concentration and build up as appropriate. Once tolerance is achieved, increasing the quantity or concentration a second time and gaining tolerance at a higher level usually gives better subsequent acne clearance. Benzoyl peroxide works as a peeling agent, increasing skin turnover and clearing pores, thus reducing the bacterial count there as well as directly as an antibacterial.
8. Reference
http://www.polymer.pusan.ac.kr/lab1/macrogalleria/pmma.html
http://www.dongseo.ac.kr/dsu2001/cyber-study/ccpark/homepage/chem3/mma.htm
http://kr.encycl.yahoo.com/final.html?id=17331

키워드

현탁중합,   PMMA,   poly(methyl methacrylate),   Suspension polymerization