以2-(十二烷基三硫代碳酸酯)-2-甲基丙烯酸为链转移剂,利用RAFT/细乳液联合技术合成了相对分子质量分布较窄(PDI=1.53)的大分子链转移剂聚甲基丙烯酸缩水甘油酯.再以该大分子为可逆加成-断裂链转移(RAFT)试剂,通过连续加料的方式加入苯乙烯后进一步引发聚合,得到PGMA-b-PS二嵌段共聚物.采用GPC、FT-IR、1H-NMR、DSC等方法对聚合产物进行了表征.结果表明:合成的聚合物为线型二嵌段共聚物,相对分子质量分布为1.87,该聚合过程具有活性/可控特征.DSC测得二嵌段共聚物具有2个玻璃化转变温度(Tg),分别为77.33℃和98.30℃.此外,还考察了单体加料顺序对聚合过程的影响.
参考文献
| [1] | Hild G.;Lamps JP. .Diblock copolymers, triblock copolymers and model networks synthesized by sequential anionic polymerization of styrene and 2,3-epoxypropyl methacrylate[J].Polymer: The International Journal for the Science and Technology of Polymers,1998(12):2637-2649. |
| [2] | 何晓燕,张健,黄辉,危大福,郑安呐.聚苯乙烯-聚甲基丙烯酸缩水甘油酯嵌段共聚物的合成与表征[J].功能高分子学报,2009(02):173-177,212. |
| [3] | Nystr?m, D.;Malmstr?m, E.;Hult, A.;Blakey, I.;Boyer, C.;Davis, T.P.;Whittaker, M.R. .Biomimetic surface modification of honeycomb films via a "grafting from" approach[J].Langmuir: The ACS Journal of Surfaces and Colloids,2010(15):12748-12754. |
| [4] | 李洋,李海英,迟继波,雷良才.功能性甲基丙烯酸甲酯-甲基丙烯酸缩水甘油酯嵌段聚合物ATRP合成[J].应用化工,2013(02):253-256,263. |
| [5] | Marvin R.Rivera;Angel A.Rodriguez-Hernandez;Norma Hernandez;Patricia Castillo;Enrique Saldivar;Leonardo Rios .Controlled/Living Free Radical Copolymerization of Styrene and Butyl Acrylate in Bulk and Emulsion with Industrial Monomers.Influence of Monomer Addition on Polymer Properties[J].Industrial & Engineering Chemistry Research,2005(8):2792-2801. |
| [6] | Huang XY;Sudol ED;Dimonie VL;Anderson CD;El-Aasser MS .Stability in styrene/HD miniemulsions containing a RAFT agent - art. no. MA060789J[J].Macromolecules,2006(20):6944-6950. |
| [7] | Pham, B.T.T.;Zondanos, H.;Such, C.H.;Warr, G.G.;Hawkett, B.S. .Miniemulsion polymerization with arrested ostwald ripening stabilized by amphiphilic RAFT copolymers[J].Macromolecules,2010(19):7950-7957. |
| [8] | Wei Zhou;Weijun Yu;Zesheng An .RAFT emulsion polymerization of styrene mediated by core cross-linked star (CCS) polymers[J].Polymer chemistry,2013(6):1921-1931. |
| [9] | Chaduc, I.;Girod, M.;Antoine, R.;Charleux, B.;D'Agosto, F.;Lansalot, M. .Batch emulsion polymerization mediated by poly(methacrylic acid) macroRAFT agents: One-pot synthesis of self-stabilized particles[J].Macromolecules,2012(15):5881-5893. |
| [10] | 杨雷,罗英武,李伯耿.苯乙烯RAFT细乳液聚合[J].高分子学报,2004(03):462-464. |
| [11] | Stoffelbach F;Tibiletti L;Rieger J;Charleux B .Surfactant-Free, Controlled/Living Radical Emulsion Polymerization in Batch Conditions Using a Low Molar Mass, Surface-Active Reversible Addition-Fragmentation Chain-Transfer (RAFT) Agent[J].Macromolecules,2008(21):7850-7856. |
| [12] | GILBERT,R G.Emulsion polymerization:a mechanistic approach[M].San Diego,CA:Academic press INC,1995 |
| [13] | JOHN T LAI;DEBBY FILLA;RONALD SHEA .Functional polymers from novelcarboxyl-terminated trithiocarbonates as highly efficient RAFT agents[J].MACROMOLECULES,2002,35:6754-6756. |
| [14] | Keddie, D.J.;Moad, G.;Rizzardo, E.;Thang, S.H. .RAFT agent design and synthesis[J].Macromolecules,2012(13):5321-5342. |
| [15] | 曹同玉;刘庆普;胡金生.聚合物乳液合成原理性能及应用[M].北京:化学工业出版社,2007 |
| [16] | LUO Y;CUI X .Reversible addition-fragmentation chain transfer polymerization of methyl-methaerylate in emulsion[J].Polymer Science Part A:Polymer Chemistry,2006,44(09):2837-2847. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%