Synthesis and Characterization of Hyperbranched Polyurethane Hybrids Using Tetraethoxysilane (TEOS) As Cross-Linker

2008 ◽  
Vol 47 (23) ◽  
pp. 9214-9224 ◽  
Author(s):  
Kishore K. Jena ◽  
K. V. S. N. Raju
Keyword(s):  
Synthesis And Characterization ◽  
Hyperbranched Polyurethane ◽  
Cross Linker

Synthesis and characterization of molecularly imprinted polymers with modified rosin as a cross-linker and selective SPE-HPLC detection of basic orange II in foods

2014 ◽  
Vol 6 (16) ◽  
pp. 6397-6406 ◽  
Author(s):  
Xiaoyan Li ◽  
Mei Li ◽  
Junjie Li ◽  
Fuhou Lei ◽  
Xiaomeng Su ◽  
...  
Keyword(s):  
Molecularly Imprinted Polymers ◽  
Solid Phase ◽  
Selective Extraction ◽  
Synthesis And Characterization ◽  
Orange Ii ◽  
Molecularly Imprinted ◽  
Imprinted Polymers ◽  
Cross Linker

A novel sample clean-up technique, i.e., molecularly imprinted solid-phase extraction (MISPE) combined with HPLC, was developed and validated for the selective extraction and determination of basic orange II in foods.

scholarly journals Sintesis dan karakterisasi polimer superabsorban dari akrilamida

2018 ◽  
Vol 11 (2) ◽  
pp. 84
Author(s):  
A. Zainal Abidin ◽  
G Susanto ◽  
N.M.T. Sastra ◽  
T Puspasari
Keyword(s):  
Absorption Capacity ◽  
Synthesis And Characterization ◽  
Superabsorbent Polymer ◽  
Ammonium Persulphate ◽  
Surface Contact Area ◽  
Acrylamide Monomer ◽  
Cross Linker ◽  
Short Time ◽  
High Absorption

Synthesis and Characterization of Superabsorbent from Acrylamide Superabsorbent polymer (SAP) is a material that can absorb water in a large amount in a short time. In this research, the polymer has been synthesized from acrylamide monomer (Am) using N,N methylene bisacrylamide (MBA)as a cross-linker and ammonium persulphate (APS) as an initiator. Effects of MBA and APS on the SAP characteristic were studied by varying composition of MBA and APS each of 0.1%-wt, 0.2 %-wt, 0.6 %-wt and 1.0 %-wt. SAP was characterized by measuring its absorption capacity to distilled water. Based on the experiment, the highest absorption capacity for 1 gram SAP is 14.5 gram water. The highest absorption is produced by SAP with APS 0.2 %-wt and MBA 0.6 %-wt. Further studies by using SEM showed that SAP which had high absorption capacity contained a lot of pores with the waving surface. Therefore, the surface contact area between SAP and water is high. Keywords: acrylamide, absorption capacity, superabsorbent polymerAbstrakSuperabsorbent Polymer (SAP) merupakan polimer yang dapat menyerap air dalam jumlah yang sangat banyak. Dalam penelitian ini, polimer tersebut disintesis dari monomer akrilamida menggunakan crosslinker N,N-metilene bisakrilamide (MBA) dan inisiator amonium persulfat (APS). Pengaruh crosslinker dan inisiator terhadap karakteristik SAP dipelajari dengan melakukan variasi komposisi APS dan (MBA) masing-masing sebesar 0,1 %-b, 0,2 %-b, 0,6 %-b, dan 1 %-b. Karakteristik produk SAP dipelajari dengan FTIR untuk menganalisis gugus fungsi yang terbentuk untuk menunjukkan bahwa polimerisasi betul terjadi dan produknya berupa SAP. Pengukuran kemampuan absorpsi SAP terhadap air destilasi menunjukkan bahwa kapasitas absorpsi terbesar yang dihasilkan oleh superabsorbent polymer dari penelitian ini sebesar 14,5 gram air dalam 1 gram produk SAP yang dibuat. Kapasitas terbesar ini dimiliki oleh SAP dengan 0,2 %-b APS dan 0,6 %-b MBA. Studi lebih lanjut dengan SEM menunjukkan bahwa SAP yang memiliki kapasitas absorpsi tertinggi itu mempunyai morfologi permukaan yang berombak dan jumlah pori yang tertinggi sehingga luas permukaan kontak antara SAP dan air juga tertinggi. Kata kunci: akrilamida, kapasitas absorpsi, superabsorbent polymer

Synthesis and Characterization of Ag2S Nanocrystals in Hyperbranched Polyurethane at Room Temperature

2002 ◽  
Vol 168 (1) ◽  
pp. 259-262 ◽  
Author(s):  
S.H. Liu ◽  
X.F. Qian ◽  
J. Yin ◽  
L. Hong ◽  
X.L. Wang ◽  
...  
Keyword(s):  
Room Temperature ◽  
Synthesis And Characterization ◽  
Hyperbranched Polyurethane
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