Sökning: "hexagonal p6mm"

Hittade 2 avhandlingar innehållade orden hexagonal p6mm.

1. 1. Mesoporous Silica Formed with Triblock Copolymers

   Författare :Katarina Flodström; Fysikalisk kemi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fysikalisk kemi; 1H NMR; TEM; SAXS; in situ; mechanism of formation; cubic Ia3d; cubic Im3m; Mesoporous; synthesis; Pluronic; SBA-16; SBA-15; hexagonal p6mm; synchrotron SAXS; Physical chemistry; amphiphilic polymers; silica;

   Sammanfattning : The formation of highly ordered mesoporous silica materials, using PEO-PPO-PEO amphiphilic triblock copolymers (so-called Pluronics) as structure directing agents, has been studied. The materials are formed through the addition of a silica source to a polymer solution of low concentration (2.5 wt ) under acidic conditions. LÄS MER

3. 2. Novel Syntheses, Structures and Functions of Mesoporous Silica Materials

   Författare :Rambabu Atluri; Alfonso E Garcia-Bennett; Maria Strömme; Paul Wright; Uppsala universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; Teknisk materialvetenskap; Materialvetenskap; Materials Science;

   Sammanfattning : The field of mesoporous silica has been studied for about 20 years but it is still an area attracting a lot of attention. The use of novel templating molecules and several issues related to the synthesis and fine structural details are still poorly understood. LÄS MER