分别采用常规乳化剂和羟乙基纤维素为保护胶体制备丙烯酸酯乳液.通过TEM分别观察乳胶粒的形态.利用流变仪测定剪切速率(Ds)-剪切应力(τ)关系、剪切速率(Ds)-黏度(η)关系.结果表明:采用羟乙基纤维素为保护胶体制备的乳液与常规乳液具有不同结构,该结构使其乳液体系流变性能不同.在相同剪切速率下,保护胶体制备的丙烯酸酯乳液的剪切力明显大于常规乳液的剪切力,该乳液在一定剪切速率范围内有剪切稀化现象.
参考文献
| [1] | Ken Yuki;Masato Nakamae;Toshiaki Sato;Hitoshi Maruyama;Takuji Okaya .Physical properties of acrylic copolymer emulsions using poly(vinyl alcohol) as a protective colloid in comparison with those using surfactants[J].Polymer international,2000(12):1629-1635. |
| [2] | KEN YUKI;TOSHIAKI SATO;HITOSHI MARUYAMA.The role of polyvinyl alcohol in emulsion polymerization[J].Polymer International,1993(30):513-517. |
| [3] | CRAIG D H.The synthesis of hydroxyethyl cellulose-stabilized acrylic latex[J].Polymeric materials science and engineering,1984(51):172-174. |
| [4] | ANNABLE T;GARY I.Degradation and grafting of hydroxyethyl cellulose during emulsion polymerization[J].Progress in Colloid and Polymer Science,2004(124):159-163. |
| [5] | BRIZZOLARA .Process for the preparation of protective colloid-stabilized aqueous dispersions[P].US 6780918,2004-08-24. |
| [6] | PAK-HARVEY .Redispersible acrylic polymer powder for cementitious compositions[P].US 5519084,1996-05-21. |
| [7] | Tadros T. .Interaction forces between particles containing grafted or adsorbed polymer layers[J].Advances in Colloid and Interface Science,2003(0):191-226. |
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%