Subject(s)
Femoral Neoplasms/diagnostic imaging , Fluorodeoxyglucose F18 , Mandibular Neoplasms/diagnostic imaging , Ovarian Neoplasms/diagnostic imaging , Plasmacytoma/diagnostic imaging , Radiopharmaceuticals , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Female , Femoral Neoplasms/therapy , Humans , Mandibular Neoplasms/pathology , Mandibular Neoplasms/therapy , Middle Aged , Multiple Myeloma/diagnostic imaging , Multiple Myeloma/pathology , Multiple Myeloma/therapy , Ovarian Neoplasms/pathology , Ovarian Neoplasms/therapy , Plasmacytoma/pathology , Plasmacytoma/therapyABSTRACT
The graft polymerization reaction between ethylene carbonate (EC) and scots pine sawdust (SPS) or peat moss (PM) offers a solvent-free approach to the simple and inexpensive aliphatic derivatization of these lignocellulosic fibers. This reaction was studied with liquid or vapor EC phases in three different reactor configurations: batch stirred (BSR), semi-continuous stirred (SSR) and continuous tubular in the gas phase (CVTR). The use of a vapor phase allowed a satisfactory grafting yield and minimal production of non-grafted polyol by-products. The crosslinking agent 4,4'-methylenebis(phenylisocyanate) (MDI) achieved superior characteristics to form shaped tablets resistant to water disaggregation, a high water retention capacity and high compression strength, characteristics that conventional organic supports like PM or PM-polyurethane foam mixtures used in biofiltration of waste gases do not completely possess.
Subject(s)
Dioxolanes/chemistry , Gases/isolation & purification , Membranes, Artificial , Organic Chemicals/isolation & purification , Soil , Ultrafiltration/methods , Wood/chemistry , Elasticity , Polymers/chemistry , Stress, MechanicalABSTRACT
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