نتایج جستجو برای: twin screw extrusion

تعداد نتایج: 53632  

2016
Qiang Ma Chuan Wang Xiaojin Li Hua Guo Jie Meng Jian Liu Haiyan Xu

Realgar (As4S4) has been demonstrated to be effective for the treatment of acute myeloid leukemia (AML); it has the advantages of no drug resistance and oral administration. Nevertheless, its poor solubility has been an obstacle to its bioavailability, requiring high-dose administration over a long period. We investigated whether crushing realgar crystals to the nanoscale and encapsulating the ...

Journal: :Chiang Mai Journal of Science 2022

The goal of this study was to develop pregelatinized starch (P-St) and polyvinyl alcohol (PVOH) fi lms as water-soluble laundry plastic bags avoid having contact with COVID-19 infected clothes by extrusion method. effects content on the properties were examined. PVOH P-St blend compounded twin- screw extruder various 0, 10, 20, 30, 40% weight xed glycerol 20 phr. produced blown lm extrusion. ch...

Journal: :International Journal of Pharmaceutics 2021

Minimizing variability in the feeding process is important for continuous manufacturing since materials are fed individually and can impact final product. This study demonstrates importance of measuring powder properties highlights need to characterize performance both offline with multiple refills intended configuration equipment. The standard grade hydroxypropyl methylcellulose (HPMC) had mat...

Journal: :Biomacromolecules 2004
L Chen S H Gordon S H Imam

Starch graft poly(methyl acrylate) (S-g-PMA) was prepared by ceric ion initiation of methyl acrylate in an aqueous corn starch slurry (prime starch) which maximized the accessibility of the starch for graft polymerization. A new ceric ion reaction sequence was established as starch-initiator-methyl acrylate followed by addition of a small amount of ceric ion solution when the graft polymerizati...

2012
Philip J. Brunner Joshua T. Clark John M. Torkelson Katsuyuki Wakabayashi

Solid-state shear pulverization (SSSP) is a unique processing technique for mechanochemical modification of polymers, compatibilization of polymer blends, and exfoliation and dispersion of fillers in polymer nanocomposites. A systematic parametric study of the SSSP technique is conducted to elucidate the detailed mechanism of the process and establish the basis for a range of current and future...

2014
Pei Gu Ming Dao Subra Suresh

Nanotwinned structures offer the potential to effectively enhance strength while preserving ductility and damage tolerance. In this paper we present an analytical model for quantifying slip transfer across twin boundaries and for deriving the attendant flow stress as a function of the twin lamellae size in nanotwinned face-centered cubic metals. The mechanistic models investigate how single or ...

2013
Chinnadurai Karunanithy Kasiviswanathan Muthukumarappan William R. Gibbons

Biofuels from biomass have the potential to reduce the dependency on fossil fuels. An efficient pretreatment method is required to accomplish the target of the Energy Act 2005. Extrusion could be a viable continuous pretreatment method to be explored. The objectives of the current study were to investigate the influence of screw speed and barrel temperature on sugar recovery from the selected w...

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