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

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%).

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

Macromolecular Bioscience ◽

10.1002/mabi.201800054 ◽

2018 ◽

Vol 18 (6) ◽

pp. 1800054 ◽

Cited By ~ 6

Author(s):

Rong Wang ◽

Fanjun Zhang ◽

Weiwei Lin ◽

Wenkai Liu ◽

Jiehua Li ◽

...

Keyword(s):

Shape Memory ◽

Chain Extender ◽

Shape Memory Properties ◽

Enzymatic Degradability

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Effect of calcium ion implantation and of immersion in Hank's solution on shape memory properties of Ti-Ni alloy

Journal de Physique IV (Proceedings) ◽

10.1051/jp4:20031079 ◽

2003 ◽

Vol 112 ◽

pp. 1121-1124

Author(s):

T. Asaoka ◽

S. Nakazawa

Keyword(s):

Ion Implantation ◽

Shape Memory ◽

Calcium Ion ◽

Ni Alloy ◽

Shape Memory Properties ◽

Hank’S Solution

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

Journal of Applied Polymer Science ◽

10.1002/app.51000 ◽

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

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Shape memory properties and microstructural evolution of rapidly solidified CuAlBe alloys

Materials Characterization ◽

10.1016/j.matchar.2013.03.010 ◽

2013 ◽

Vol 80 ◽

pp. 92-97 ◽

Cited By ~ 6

Author(s):

Semra Ergen ◽

Orhan Uzun ◽

Fikret Yilmaz ◽

M. Fatih Kiliçaslan

Keyword(s):

Shape Memory ◽

Microstructural Evolution ◽

Shape Memory Properties ◽

Rapidly Solidified

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

Advanced Engineering Forum ◽

10.4028/www.scientific.net/aef.13.83 ◽

2015 ◽

Vol 13 ◽

pp. 83-90 ◽

Cited By ~ 3

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.

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