Water Absorption of Elastomers By
نویسندگان
چکیده
منابع مشابه
Influences of NCO/OH and triol/diol Ratios on the Mechanical Properties of Nitro-HTPB Based Polyurethane Elastomers
The present study describes the effect of NCO/OH and triol/diol ratios on the mechanical properties of Nitro functionalized Hydroxyl-terminated polybutadiene (Nitro-HTPB) elastomers. The progress of the cure reaction of Nitro-HTPB and toluene diisocyanate (TDI) is evaluated by following up the variations in the IR absorption bands of the NCO stretching and the CO ...
متن کاملTribological Behaviours of Nanoclay Filled Polyamide-6/Polypropylene/Compatibilizer Composite against Stainless Steel Counter-Face
Polyamide polymers have moderate mechanical properties, excellent wear resistant properties, and solvents. However, polyamides have some disadvantages such as notch sensitivity and high water absorption. Generally, polyamides are ductile in the un notched state but they show brittle behavior in the state of notched impact. Some disadvantages of polyamides can be improved by some fillers and add...
متن کاملFluoridated elastomers: in vivo versus in vitro fluoride release.
OBJECTIVES To compare (i) the in vivo release of fluoride from fluoridated elastomers to the in vitro release, and (ii) the residual fluoride content of the elastomers after 1 week in the mouth with and without fluoride toothpaste and mouthrinse. DESIGN A prospective, longitudinal, cross-over study. SUBJECTS AND METHOD Six subjects were recruited by poster to take part in the study. Each su...
متن کاملBiodegradable poly(ester urethane)urea elastomers with variable amino content for subsequent functionalization with phosphorylcholine.
While surface modification is well suited for imparting biomaterials with specific functionality for favorable cell interactions, the modification of degradable polymers would be expected to provide only temporary benefit. Bulk modification by incorporating pendant reactive groups for subsequent functionalization of biodegradable polymers would provide a more enduring approach. Towards this end...
متن کاملبررسی میزان حذف کادمیوم از آب به وسیله توده باکتریایی در فیلتر سیلیسی بیولوژیکی
Background and purpose: Studies show that surface or subsurface water in some areas near to the pollutant sources, to an extent higher than the permisible potable limit are contaminated with cadmium. There are different reports about biological absorption of cadmium in high concentrations (present in industrial effluents) by bacterial biomass, but there is less report about removing of low co...
متن کامل