Thermal, mechanical and electrical studies of novel shape memory polyurethane/polyaniline blends

Sattar, Rabia; Kausar, Ayesha; Siddiq, Muhammad

doi:10.1007/s10118-015-1680-5

Cited by 55 publications

(23 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several blends of polyurethanes have been studied. For example, polyurethane/polyaniline (PU/PANI) blend has been studied with enhanced electrical properties [16]. The effect of moisture on glass transition temperature (T g ) of polyurethane has also been studied [17].…”

Section: Prolog To Polyurethanementioning

confidence: 99%

Polyurethane/Epoxy Interpenetrating Polymer Network

Kausar¹

2017

Aspects of Polyurethanes

Self Cite

View full text Add to dashboard Cite

Polyurethane is a versatile thermoplastic polymer with a range of characteristics (tensile strength, chemical resistance, thermal stability, and processability) as coating, elastomer, foam, and fiber for technical application. Epoxy resin, on the other hand, is thermoset having fine mechanical, chemical, and adhesion properties to be utilized as adhesives, coatings, and matrix for advanced composite materials. However, epoxy resins are rigid and brittle in nature and have poor crack resistance. To overcome these problems, polyurethane phase has been introduced in the epoxy network for toughening. Considerable research has been carried out to introduce a second reactive polymer in the matrix to generate interpenetrating polymer network (IPN). Consequently, mechanical properties, glass transition behavior, thermal resistance, and damping features of polyurethane have been enhanced by introducing epoxy to form polyurethane/epoxy interpenetrating polymer network structure. Different modifiers have been employed to modify the properties of polyurethane/epoxy IPNs such as montmorillonite nanoclay, fibers, fly ash, conducting polymers, etc. The polyurethane/epoxy crosslinked networks have shown a range of high-performance application in ion-exchange resins, aircraft, engineering materials, biomedical devices, and other commercial IPN products.

show abstract

Section: Prolog To Polyurethanementioning

confidence: 99%

Polyurethane/Epoxy Interpenetrating Polymer Network

Kausar¹

2017

Aspects of Polyurethanes

Self Cite

View full text Add to dashboard Cite

show abstract

“…Referring to the previous research of the reaction between hydroxyl and isocyanate [18], the FTIR analysis was monitored in the range of 400−4000 cm −1 . It mentioned that the most important characters were located at 3050−3720 cm −1 for −NH stretching vibration, 2800−3000 cm −1 for −CH stretching vibration, at 1665−1780 cm −1 for C=O stretching vibration, at 1500−1590 cm −1 for C−N, N−H, and C−C, and at 1200−1292 cm −1 for C−N [18]. Figure 7 shows FTIR pattern of the samples, and the data confirmed the previous research.…”

Section: Ftir Analysismentioning

confidence: 99%

Preparation and Characterization of Polyurethane/Carbon/Organoclay Composite for Coating of Aluminum Conductor Overhead Lines

Kurniawan

Soegijono

2020

e-J. Surf. Sci. Nanotechnol.

View full text Add to dashboard Cite

Electrical transmission overhead lines use an aluminum conductor in services. However, protection of the aluminum conductor from corrosion has to be considered. Hence, an extensive experimental work was done to prepare the composite coating of the aluminum conductor. Three types of polyurethane composites were fabricated with different fillers (5 wt% carbon and 5 wt% organoclay) and were characterized. The composites were polyurethane/carbon (PC), polyurethane/organoclay (PClay), and polyurethane/carbon/organoclay (PCClay). Thermogravimetry analysis and Fourier transform infrared spectroscopy were conducted to obtain thermal properties and chemical bonding of the composites. To obtain the corrosion resistance, salt spray tests were applied. To obtain hydrophobicity properties, the contact angle between water and the composites was measured. Measurements of composites relative permittivity was conducted to obtain dielectric properties. A water vapor permeability test was conducted to obtain the rate of water/gas vapor discharge. Finally, an adhesion test was conducted to obtain adhesion performance according to the ASTM D3359 standard. Based on characterization, PCClay had better characters to be used as an overhead aluminum coating material followed by PC and PClay.

show abstract

“…The mixture was stirred for 3 h at 60 8C. 27 Afterwards the preferred amount of TDI was added drop wise with constant stirring. The polyurethane solution prepared was cast into glass Petri dish at room temperature.…”

Section: Synthesis Of Pdmae-peg-tdi Polyurethane (Pu)mentioning

confidence: 99%

Polyurethane/poly(ethylene‐co‐ethyl acrylate) and functional carbon black‐based hybrids: Physical properties and shape memory behavior

Kausar

Siddiq

2016

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

A polyurethane (PU) was developed from poly(dimethylamine-co-epichlorohydrin-co-ethylenediamine) (PDMAE) and polyethylene glycol (PEG) as soft segment and 2,4-toluene diisocyanate (TDI) incorporating as hard segment. Later PU was blended with poly(ethylene-co-ethyl acrylate) (PEEA). Poly(vinyl alcohol)-functionalized carbon black (CB-PVA) nanoparticles was used as filler. The structure, morphology, mechanical, crystallization, and shape memory behavior (heat and voltage) were investigated methodically. Due to physical interaction of the blend components, unique self-assembled network morphology was observed. The interpenetrating network was responsible for 83% rise in tensile modulus and 46% increase in Young's modulus of PU/PEEA/CB-PVA 1 hybrid compared with neat PU/PEEA bend. Electrical conductivity was increased to 0.2 Scm 21 with 1 wt % CB-PVA nanofiller.The original shape of sample was almost 94% recovered using heat induced shape memory effect while 97% recovery was observed in an electric field of 40 V. Electroactive shape memory results were found better than heat stimulation effect.

show abstract

Thermal, mechanical and electrical studies of novel shape memory polyurethane/polyaniline blends

Cited by 55 publications

References 37 publications

Polyurethane/Epoxy Interpenetrating Polymer Network

Polyurethane/Epoxy Interpenetrating Polymer Network

Preparation and Characterization of Polyurethane/Carbon/Organoclay Composite for Coating of Aluminum Conductor Overhead Lines

Polyurethane/poly(ethylene‐co‐ethyl acrylate) and functional carbon black‐based hybrids: Physical properties and shape memory behavior

Contact Info

Product

Resources

About