Formulation of emulsion adhesives with removal properties by using alkali soluble resins.
This study was aimed at developing environmental friendly adhesion materials using alkali soluble resins (ASRs). Water-borne emulsion pressure-sensitive adhesives show good compatibility with different polymer emulsions, high solid contents, and good working property, thereby allowing adjustment of the extensive viscosity. On the other hand, it is not easily recyclable and its adhesion and water-resistance properties are not optimal. Herein, ASR was used as the polymeric surfactant. ASR presents good emulsion stabilization, high molecular weight, and solubility in alkali solutions. ASR contains both hydrophobic and hydrophilic groups, thereby reducing the surface tension of the aqueous phase stabilizing monomer droplet or polymer particles. Additionally, it can form aggregates as a result of inter- and intramolecular hydrophobic interactions. The large number of carboxyl groups of this resin stabilizes polymer particles by an electrostatic effect. The recycling and adhesion properties of this resin were assessed by using UTM, a weight method. Further properties of the resin were determined by DSC, GPC, and ETC.
Department of Chemical Engineering, Yonsei University, Yonsei-ro 50, Shinchon-dong, Seodaemoon-gu, Seoul 120-749, Korea.
Kwang-Sun
KS
Ko
Ji Young
JY
Lee
Jin Kie
JK
Shim
Jun-Young
JY
Lee
D000180:Acrylic Resins / Q000138:chemical synthesis*; D000268:Adhesiveness; D000269:Adhesives / Q000138:chemical synthesis*; D000468:Alkalies / Q000737:chemistry*; D004655:Emulsions / Q000138:chemical synthesis*; D006244:Hardness; D008422:Materials Testing; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D012995:Solubility
D000180:Acrylic Resins; D000269:Adhesives; D000468:Alkalies; D004655:Emulsions