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

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%).

Shape Memory Properties and Enzymatic Degradability of Poly(ε-caprolactone)-Based Polyurethane Urea Containing Phenylalanine-Derived Chain Extender

2018 ◽  
Vol 18 (6) ◽  
pp. 1800054 ◽  
Author(s):  
Rong Wang ◽  
Fanjun Zhang ◽  
Weiwei Lin ◽  
Wenkai Liu ◽  
Jiehua Li ◽  
...  
Keyword(s):  
Shape Memory ◽  
Chain Extender ◽  
Shape Memory Properties ◽  
Enzymatic Degradability

Thermo‐responsive shape memory properties based on polylactic acid and styrene‐butadiene‐styrene block copolymer

2021 ◽  
pp. 51000
Author(s):  
Fathin Hani Azizul Rahim ◽  
Abdul Aziz Saleh ◽  
Raa Khimi Shuib ◽  
Ku Marsilla Ku Ishak ◽  
Zuratul Ain Abdul Hamid ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Shape Memory ◽  
Polylactic Acid ◽  
Shape Memory Properties ◽  
Styrene Butadiene Styrene ◽  
Styrene Butadiene ◽  
Butadiene Styrene

Shape memory properties and microstructural evolution of rapidly solidified CuAlBe alloys

2013 ◽  
Vol 80 ◽  
pp. 92-97 ◽  
Author(s):  
Semra Ergen ◽  
Orhan Uzun ◽  
Fikret Yilmaz ◽  
M. Fatih Kiliçaslan
Keyword(s):  
Shape Memory ◽  
Microstructural Evolution ◽  
Shape Memory Properties ◽  
Rapidly Solidified

scholarly journals Shape Memory NiTi and NiTiCu Alloys Obtained by Spark Plasma Sintering Process

2015 ◽  
Vol 13 ◽  
pp. 83-90 ◽  
Author(s):  
Cristiana Diana Cristea ◽  
Magdalena Lungu ◽  
Alexander M. Balagurov ◽  
Virgil Marinescu ◽  
Otilia Culicov ◽  
...  
Keyword(s):  
Shape Memory ◽  
Intermetallic Compounds ◽  
Spark Plasma Sintering ◽  
Sintering Process ◽  
Transformation Behavior ◽  
Plasma Sintering ◽  
New Process ◽  
Shape Memory Properties ◽  
Spark Plasma ◽  
Niti Shape Memory Alloys

The addition of Cu to near equiatomic NiTi shape memory alloys (SMAs) can provide some modifications of their shape memory properties by affecting their transformation behavior. The same effect was obtained in the case of Ni3Ti2 and Ni4Ti3 precipitates presence in the microstructure of NiTi. Also the substitution of Cu to NiTi alloys increases the hardness of the materials. This paper presents the microstructural and mechanical investigations of NiTi and NiTiCu alloys obtained by spark plasma sintering (SPS) process that represents a great potential for researchers as a new process for the fabrication of intermetallic compounds.

Microstructure, mechanical and shape memory properties of Ti–55Pd–5x (x=Zr, Hf, V, Nb) alloys

2013 ◽  
Vol 585 ◽  
pp. 86-93 ◽  
Author(s):  
R. Arockiakumar ◽  
M. Takahashi ◽  
S. Takahashi ◽  
Yoko Yamabe-Mitarai
Keyword(s):  
Shape Memory ◽  
Shape Memory Properties

scholarly journals Entangled single-wire NiTi material: A porous metal with tunable superelastic and shape memory properties

2015 ◽  
Vol 96 ◽  
pp. 311-323 ◽  
Author(s):  
B. Gadot ◽  
O. Riu Martinez ◽  
S. Rolland du Roscoat ◽  
D. Bouvard ◽  
D. Rodney ◽  
...  
Keyword(s):  
Shape Memory ◽  
Porous Metal ◽  
Single Wire ◽  
Shape Memory Properties
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