scholarly journals Study on the Shape Memory Polyamides. Synthesis and Thermomechanical Properties of Polycaprolactone-Polyamide Block Copolymer

2000 ◽  
Vol 32 (1) ◽  
pp. 23-28 ◽  
Author(s):  
Ha Yung Lee ◽  
Han Mo Jeong ◽  
Jeong Sam Lee ◽  
Byung Kyu Kim
Keyword(s):  
Block Copolymer ◽  
Shape Memory ◽  
Thermomechanical Properties

Synthesis of A2+B3 type hyperbranched poly(amide-ether) block copolymer and its shape memory function

2021 ◽  
Vol 146 ◽  
pp. 110255
Author(s):  
Ryoji Kudo ◽  
Tadashi Tsukamoto ◽  
Shiduko Nakajo ◽  
Atsuhiro Fujimori ◽  
Yoshiyuki Oishi ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Shape Memory ◽  
Memory Function ◽  
Hyperbranched Poly

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

Investigate of Electrical Conductivity of Shape-Memory Polymer Filled with Carbon Black

2008 ◽  
Vol 47-50 ◽  
pp. 714-717 ◽  
Author(s):  
Xin Lan ◽  
Jin Song Leng ◽  
Yan Ju Liu ◽  
Shan Yi Du
Keyword(s):  
Electrical Conductivity ◽  
Carbon Black ◽  
Shape Memory ◽  
Shape Recovery ◽  
Volume Fraction ◽  
Shape Memory Polymer ◽  
Recovery Process ◽  
Thermomechanical Properties ◽  
Electrically Conductive ◽  
New System

A new system of thermoset styrene-based shape-memory polymer (SMP) filled with carbon black (CB) is investigated. To realize the electroactive stimuli of SMP, the electrical conductivity of SMP filled with various amounts of CB is characterized. The percolation threshold of electrically conductive SMP filled with CB is about 3% (volume fraction of CB), which is much lower than many other electrically conductive polymers. When applying a voltage of 30V, the shape recovery process of SMP/CB(10 vol%) can be realized in about 100s. In addition, the thermomechanical properties are also characterized by differential scanning calorimetery (DSC).

Thermomechanical properties of shape memory polymer subjected to tension in various conditions

2009 ◽  
Vol 6 (2) ◽  
pp. 189-205 ◽  
Author(s):  
Elzbieta A. Pieczyska ◽  
Wojciech K. Nowacki ◽  
Hisaaki Tobushi ◽  
Shunichi Hayashi
Keyword(s):  
Shape Memory ◽  
Shape Memory Polymer ◽  
Thermomechanical Properties

scholarly journals The Effect of POSS Type on the Shape Memory Properties of Epoxy-Based Nanocomposites

Molecules ◽  
2020 ◽  
Vol 25 (18) ◽  
pp. 4203
Author(s):  
Avraham I. Bram ◽  
Irina Gouzman ◽  
Asaf Bolker ◽  
Noam Eliaz ◽  
Ronen Verker
Keyword(s):  
Transition Temperature ◽  
Shape Memory ◽  
Crosslinking Density ◽  
Mechanical Analysis ◽  
Thermomechanical Properties ◽  
Space Environment ◽  
Scanning Calorimetry ◽  
Space Applications ◽  
Curing Conditions ◽  
Oligomeric Silsesquioxane

Thermally activated shape memory polymers (SMPs) can memorize a temporary shape at low temperature and return to their permanent shape at higher temperature. These materials can be used for light and compact space deployment mechanisms. The control of transition temperature and thermomechanical properties of epoxy-based SMPs can be done using functionalized polyhedral oligomeric silsesquioxane (POSS) additives, which are also known to improve the durability to atomic oxygen in the space environment. In this study, the influence of varying amounts of two types of POSS added to epoxy-based SMPs on the shape memory effect (SME) were studied. The first type contained amine groups, whereas the second type contained epoxide groups. The curing conditions were defined using differential scanning calorimetry and glass transition temperature (Tg) measurements. Thermomechanical and SME properties were characterized using dynamic mechanical analysis. It was found that SMPs containing amine-based POSS show higher Tg, better shape fixity and faster recovery speed, while SMPs containing epoxide-based POSS have higher crosslinking density and show superior thermomechanical properties above Tg. This work demonstrates how the Tg and SME of SMPs can be controlled by the type and amount of POSS in an epoxy-based SMP nanocomposite for future space applications.

Block-copolymer organic–inorganic networks. Structure, morphology and thermomechanical properties

Polymer ◽  
2004 ◽  
Vol 45 (10) ◽  
pp. 3267-3276 ◽  
Author(s):  
Libor Matějka ◽  
Oxana Dukh ◽  
Helena Kamišová ◽  
Drahomı́ra Hlavatá ◽  
Milena Špı́rková ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Thermomechanical Properties ◽  
Structure Morphology ◽  
Networks Structure
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