Fouling release nanostructured coatings based on PDMS-polyurea segmented copolymers
نویسندگان
چکیده
منابع مشابه
4. Influence of System Variables on the Morphological and Dynamic Mechanical Behavior of Polydimethylsiloxane Based Segmented Polyurethane and Polyurea Copolymers
4.1 CHAPTER SUMMARY The effect of the variables of polydimethylsiloxane (PDMS) soft segment length, hard segment type and content as well as choice of chain extender (its MW and symmetry) on the morphology of segmented polyurethane and polyurea copolymers was investigated. The methods of dynamic mechanic analysis, small angle x-ray scattering, atomic force microscopy, and mechanical testing wer...
متن کامل5. Investigating the Structure-property Behavior of Polydimethylsiloxane Based Segmented Polyurea Copolymers with a Second Polypropylene Oxide Soft Segment Component
5.1 CHAPTER SUMMARY Polypropylene oxide (PPO) was incorporated in a controlled manner between polydimethylsiloxane (PDMS) and urea segments in segmented polyurea copolymers and their solid state structure-property behavior was investigated. The copolymers contained PDMS segments of MW 3200 or 7000 g/mol and an overall hard segment content of 10-35 wt %. PPO segments of MW 450 or 2000 g/mol were...
متن کاملImpact of diatomaceous biofilms on the frictional drag of fouling-release coatings.
Skin-friction results are presented for fouling-release (FR) hull coatings in the unexposed, clean condition and after dynamic exposure to diatomaceous biofilms for 3 and 6 months. The experiments were conducted in a fully developed turbulent channel flow facility spanning a wide Reynolds number range. The results show that the clean FR coatings tested were hydraulically smooth over much of the...
متن کامل8. Role of Chain Symmetry and Hydrogen Bonding in Segmented Polyurethane and Polyurea Copolymers with Monodisperse Hard Segments
8.1 CHAPTER SUMMARY Segmented polyurethane and polyurea copolymers whose hard segments are based on only a single diisocyanate molecule are thermoplastic; they can exhibit useful structural properties if the level of symmetry and/or cohesiveness of the hard microdomains is carefully selected. These parameters control the hard segments’ ability to establish long-range connectivity and percolatio...
متن کاملElectrodeposition of Nanostructured Magnesium Coatings
In this work, we report on the electroplating of ultrafine and uniform magnesium (Mg) films on copper (Cu) and carbon nanotube (CNT) paper substrates. By controlling the process parameters and utilizing the pulsed deposition method, the average grain size of Mg was reduced to nanodimensions. Surface pretreatment of the substrates by depositing a seed layer was found to be an efficient strategy ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Polymer
سال: 2010
ISSN: 0032-3861
DOI: 10.1016/j.polymer.2010.04.024