6.5 An amorphous emulsion copolymer consisting of 62 wt% methyl methacrylate (homopolymer Tg = 105 °C) and 38 wt% ethyl acrylate (homopolymer Tg = -23 °C) has been proposed as the basis of a latex paint formulation. A latex consists of tiny (≈ 1-10 μm) polymer particles suspended in water. After application of the paint, these particles must coalesce to form a film upon evaporation of water. a. Explain the similarity and difference between an emulsion and a suspension. b. What value of Tg would you predict for this random copolymer? Would the copolymer be suitable for an outdoor paint?

6.5 An amorphous emulsion copolymer consisting of 62 wt% methyl methacrylate (homopolymer Tg = 105 °C) and 38 wt% ethyl acrylate (homopolymer Tg = -23 °C) has been proposed as the basis of a latex paint formulation. A latex consists of tiny (≈ 1-10 μm) polymer particles suspended in water. After application of the paint, these particles must coalesce to form a film upon evaporation of water. a. Explain the similarity and difference between an emulsion and a suspension. b. What value of Tg would you predict for this random copolymer? Would the copolymer be suitable for an outdoor paint?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

6.5 An amorphous emulsion copolymer consisting of 62 wt% methyl methacrylate (homopolymer Tg =
105 °C) and 38 wt% ethyl acrylate (homopolymer Tg = -23 °C) has been proposed as the basis of
a latex paint formulation. A latex consists of tiny (≈ 1 - 10 μm) polymer particles suspended in
water. After application of the paint, these particles must coalesce to form a film upon
evaporation of water.
a. Explain the similarity and difference between an emulsion and a suspension.
b. What value of Tg would you predict for this random copolymer? Would the copolymer be
suitable for an outdoor paint?

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