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เนื้อหาย่อ : Contents Chapter 1 Preface xiii Historical Introduction to Plastics Introduction / Natural Plastics / Early Modified Natural Materials s Early Synthetic Plastics Commercial Synthetic Plastics8 Summary Related Intemnet Sites10 Vocabulary 10 Questions 11 Activities 11 Chapter 2 Current Status of the Plastics Industry 15 Introduction 15 Major Plastics Materials 16 Recycling of Plastics 17 Disposal by Incineration or Degradation3 Organizations in the Plastics Industry32 Related Internet Sites 34 Vocabulary 34 Questions 36 Activities 36 Chapter 3 Elementary Polymer Chemistry39 Introduction 39 Review of Basic Chemistry Hydrocarbon Molecules Macromolecules Molecular Organization 43 Intermolecular Forces