Clay Reinforced Hyperbranched Polyurethane Nanocomposites Based on Palm Oil Polyol as Shape Memory Materials

2012 ◽  
Vol 548 ◽  
pp. 115-118 ◽  
Author(s):  
Ernie Suzana Ali ◽  
Syazana Ahmad Zubir ◽  
Ahmad Sahrim
Keyword(s):  
Shape Memory ◽  
Palm Oil ◽  
Chain Extender ◽  
Diphenylmethane Diisocyanate ◽  
Mixing Process ◽  
Clay Particles ◽  
Step Process ◽  
Hyperbranched Polyurethane ◽  
Shape Memory Properties ◽  
Polyurethane Nanocomposites

Reactive nanoclay reinforced hyperbranched polyurethane (HPU) nanocomposites have been synthesized with the introduction of palm oil polyol as part of the precursor. The HPU were prepared in a two-step process using polycaprolactonediol, 4,4’-diphenylmethane diisocyanate and 1,4-butanediol as chain extender. Nanoclay was added with the purpose of improving the properties of the pristine polyurethane. The introduction of palm oil polyol is believed to enhance the mixing process between polymer matrix and filler. Thermal, mechanical and shape memory properties of produced HPU were investigated. The results showed that the crystallinity of HPU nanocomposites decreased with introduction of clay particles and that the mechanical and shape memory properties were enhanced with the addition of small amount of reactive nanoclay (up to 3 wt%).

Palm Oil Polyol/ Polyurethane Shape Memory Nanocomposites

2013 ◽  
Vol 291-294 ◽  
pp. 2666-2669 ◽  
Author(s):  
Syazana Ahmad Zubir ◽  
Ahmad Sahrim ◽  
Ernie Suzana Ali
Keyword(s):  
Shape Memory ◽  
Palm Oil ◽  
Thermoplastic Polyurethane ◽  
Polymerization Process ◽  
Diphenylmethane Diisocyanate ◽  
X Ray Diffraction ◽  
X Ray ◽  
Good Shape ◽  
Crosslinking Process ◽  
Polyurethane Nanocomposites

A series of nanoclay reinforced thermoplastic polyurethane with shape memory effect have been successfully synthesized via two-step polymerization process. The polyurethanes are composed of polycaprolactonediol, palm oil polyol, 4,4’-diphenylmethane diisocyanate and 1,4-butanediol. Nanoclay was added in order to improve the overall properties of the pristine polyurethane. Besides, the addition of palm oil polyol is believed to enhance the crosslinking process and further improve the properties. X-ray diffraction result showed that there is a decrease in crystallinity of polyurethane nanocomposites as clay is added. Good shape memory and mechanical properties of resulting polyurethane nanocomposites were obtained in this work.

Electrical Conductivity of BioBased Shape Memory Polyurethane Filled with CNT

2016 ◽  
Vol 880 ◽  
pp. 69-72
Author(s):  
Ernie Suzana Ali ◽  
Azwani Sofia Ahmad Khiar ◽  
Syazana Ahmad Zubir ◽  
Zul Afiq Zaim Zulkeple
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Shape Memory ◽  
Palm Oil ◽  
Polymerization Process ◽  
Diphenylmethane Diisocyanate ◽  
Shape Memory Polyurethane ◽  
Step Polymerization

Biobased shape memory polyurethane filled with carbon nanotubes (CNT) were prepared using two step polymerization process. The bio based shape memory polyurethane (SMPU) were composed of polycaprolactonediol, polyol based on palm oil, 4, 4’-diphenylmethane diisocyanate and 1, 4-butanediol. In this paper, CNTs has been used as fillers to introduce the electrical conductivity in the SMPU. The bio-based shape memory polyurethane shows electrical conductivity with addition of 7 wt% CNT.

Hybrid and biocompatible cellulose/polyurethane nanocomposites with water-activated shape memory properties

2019 ◽  
Vol 216 ◽  
pp. 86-96 ◽  
Author(s):  
Leire Urbina ◽  
Ana Alonso-Varona ◽  
Ainara Saralegi ◽  
Teodoro Palomares ◽  
Arantxa Eceiza ◽  
...  
Keyword(s):  
Shape Memory ◽  
Shape Memory Properties ◽  
Polyurethane Nanocomposites

The Effect of Chain Extender Type on the Physical, Mechanical, and Shape Memory Properties of Poly(ε-Caprolactone)-based Polyurethane-ureas

2017 ◽  
Vol 56 (18) ◽  
pp. 1977-1985 ◽  
Author(s):  
Alireza Eyvazzadeh Kalajahi ◽  
Mostafa Rezaei ◽  
Farhang Abbasi ◽  
Gity Mir Mohamad Sadeghi
Keyword(s):  
Shape Memory ◽  
Chain Extender ◽  
Shape Memory Properties

Polyurethane/Clay Shape Memory Nanocomposites Based on Palm Oil Polyol

2012 ◽  
Vol 576 ◽  
pp. 236-239 ◽  
Author(s):  
Syazana Ahmad Zubir ◽  
Ernie Suzana Ali ◽  
Sahrim Haji Ahmad ◽  
Norazwani Muhammad Zain ◽  
Soo Kai Wai
Keyword(s):  
Shape Memory ◽  
Palm Oil ◽  
Soft Segment ◽  
Thermoplastic Polyurethane ◽  
Clay Content ◽  
Weight Percent ◽  
Shape Memory Behavior ◽  
Crosslinking Process ◽  
The Matrix ◽  
Polyurethane Nanocomposites

Thermoplastic polyurethane (TPU) nanocomposites were prepared using polycaprolactonediol as the soft segment, 4,4’-diphenylmethane diisocyanate as the hard segment, 1,4-butanediol and palm oil polyol. Nanoclay with certain weight percent (wt%) was reinforced as filler to improve both mechanical and shape memory behavior of the nanocomposites. Palm oil polyol was introduced in order to provide hyperbranched structure for better dispersion of filler in the matrix as well as aiding the crosslinking process. The experimental results showed that the mechanical and shape memory behavior of clay reinforced polyurethane nanocomposites were influenced by clay weight percent in the polymer matrix. TPU with 3 wt% clay showed optimum values of mechanical properties while the shape memory behavior decreases with increasing clay content.

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