KR20130015479A - Ritp 중합법과 용액 재결정법을 이용한 안정화된 단분산 구형 고분자 입자의 제조 방법 - Google Patents
Ritp 중합법과 용액 재결정법을 이용한 안정화된 단분산 구형 고분자 입자의 제조 방법 Download PDFInfo
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Abstract
Description
도 2은 실시예 1의 (b)단계에서 재결정된 고분자 입자의 전자 현미경 사진이다.
단량체 | 아이오딘함량(g) | 분자량 (g/mol) |
PDI (Mw/Mn) |
상용성 용매 | PVA 함량(g) |
입자 크기(μm) |
|
실시예 1 | Styrene | 0.260 | 50,000 | 1.7 | THF | 0.5 | 2.7 |
실시예 2 | MMA | 0.260 | 35,000 | 1.55 | THF | 0.5 | 5.5 |
실시예 3 | BMA | 0.260 | 45,000 | 1.63 | THF | 0.5 | 4.1 |
실시예 4 | Styrene | 0.220 | 50,000 | 1.7 | THF | 0.5 | 2.7 |
실시예 5 | Styrene | 0.280 | 50,000 | 1.7 | THF | 0.5 | 2.7 |
실시예 6 | Styrene | 0.260 | 50,000 | 1.7 | 아세톤 | 0.5 | 1.8 |
실시예 7 | Styrene | 0.260 | 50,000 | 1.7 | THF | 0 | 4.8 |
실시예 8 | Styrene | 0.260 | 50,000 | 1.7 | THF | 1 | 1.2 |
비교예 1 | Styrene | 0 | 200,000 | 3.7 | THF | 0.5 | 응집 |
비교예 2 | Styrene | 0 | 45,000 | 2.5 | THF | 0.5 | 응집 |
Claims (11)
- (a) 불포화 비닐계 단량체, 수용성 중합개시제, 퍼옥사이드계 촉매 및 사슬 이동제를 반응 용매에 용해시키고 교반하여 고분자 라텍스 입자를 제조하는 단계; 및
(b) 상기 고분자 라텍스 입자를 상용성 용매에 용해시키고 증류된 탈 이온수를 첨가하여 분산시켜 재결정화시키는 단계
를 포함하는 것을 특징으로 하는 구형 고분자 입자의 제조방법.
- 제 1 항에 있어서, 상기 교반은 60 ~ 90 ℃에서 100 ~ 300 rpm의 교반속도로 5 ~ 10 시간 동안 이루어지는 것을 특징으로 하는 구형 고분자 입자의 제조방법.
- 제 1항에 있어서, 상기 불포화 비닐계 단량체는 스티렌, 디비닐벤젠, 에틸비닐벤젠, 알파메틸스티렌, 플루오로스티렌, 비닐피리딘, 염화비닐, 아크릴로니트릴, 메타크릴로니트릴, 부틸아크릴레이트, 2-에틸헥실에틸아크릴레이트, 글리시딜아크릴레이트, N,N'-디메틸아미노에틸아크릴레이트, 부틸메타크릴레이트, 2-에틸헥실에틸메타크릴레이트, 메틸메타크릴레이트, 2-히드록시에틸메타크릴레이트, 글리시딜메타크릴레이트, 폴리에틸렌글리콜디아크릴레이트, 1,3-부틸렌글리콜디아크릴레이트, 1,6-헥산디아크릴레이트, 에틸렌글리콜디메타크릴레이트, 디에틸렌글리콜디메타크릴레이트, 트리에틸렌글리콜디메타크릴레이트, 폴리에틸렌글리콜디메타크릴레이트 및 1,3-부틸렌글리콜디메타크릴레이트로 이루어진 군에서 선택된 1종 또는 2종 이상인 것을 특징으로 하는 구형 고분자 입자의 제조방법.
- 제 1 항에 있어서, 상기 불포화 비닐계 단량체는 반응 용매 100 중량부에 대하여 2 ~ 40 중량부로 사용되는 것을 특징으로 하는 구형 고분자 입자의 제조방법.
- 제 1 항에 있어서, 상기 수용성 중합개시제는 2,2'-아조비스이소부티로니트릴, 2,2'-아조비스-2,4-디메틸발레로니트릴, 2,2'-아조비스-2-메틸이소부티로니트릴, 암모늄퍼설페이트, 포타슘퍼설페이트, 소듐퍼설페이트, 암모늄바이설페이트 및 소듐바이설페이트로 이루어진 군에서 선택된 1종 또는 2종 이상인 것을 특징으로 하는 구형 고분자 입자의 제조방법.
- 제 1 항에 있어서, 상기 수용성 중합 개시제는 상기 불포화 비닐계 단량체 100 중량부에 대하여 0.01 ~ 10 중량부로 사용되는 것을 특징으로 하는 구형 고분자 입자의 제조 방법.
- 제 1 항에 있어서, 상기 퍼옥사이드계 촉매는 하이드로퍼옥사이드, 큐멘하이드로퍼옥사이드, 부틸하이드로퍼옥사이드, 하이드로메틸하이드로퍼옥사이드 및 아세틸하이드로퍼옥사이드로 이루어진 군에서 선택된 1종 또는 2종 이상인 것을 특징으로 하는 구형 고분자 입자의 제조 방법.
- 제 1 항에 있어서, 사슬 이동제는 아이오딘, 포타슘아이오디드, 소디움아이오디드, 리튬아이오디드, 브롬아이오디드, 아이오딘모노크로라이드, 마그네슘아이오디드, 포스포러스트리아이오디드 및 알킬아이오디드로 이루어진 군에서 선택된 1종 또는 2종 이상인 것을 특징으로 하는 구형 고분자 입자의 제조 방법.
- 제 1 항에 있어서, 상기 수용성 중합 개시제와 사슬 이동제는 1 : 5 ~ 2 : 1의 중량비로 혼합되는 것을 특징으로 하는 구형 고분자 입자의 제조방법.
- 제 1 항에 있어서, 상기 (a)단계에서 제조된 고분자 라텍스의 질량평균분자량이 25,000 ~ 60,000 g/mol 인 것을 특징으로 하는 구형 고분자 입자의 제조방법.
- 제 1 항에 있어서, 상기 (a)단계에서 제조된 고분자 라텍스의 PDI가 1.5 ~ 1.8 범위에 있는 것을 특징으로 하는 구형 고분자 입자의 제조방법.
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