TECHNOLOGY & ENGINEERING 20 Polymers 18 Chemical & Biochemical 15 Additives 13 Adjuvants 13 Polym�eres 12 Materials 10 Solvants 9 Solvents 9 Deterioration 7 Mat�eriaux 6 Plastics 6 Polymères 6 Stabilisants 6 Stabilizing agents 6 Biodegradation 5 Engineering (General) 5 Mati�eres plastiques 5 Rayonnement ultraviolet 5 Reference 5 Ultraviolet radiation 5 D�et�erioration 4 Environmental testing 4 Essais d'environnement 4 Matériaux 4 Adhesion 3 Adhesives 3 Biod�egradation 3 Chimie verte 3 Cristallisation 3