The development of polymers that can repair damage autonomously would be useful to improve the lifetime polymeric materials. To date, limited attention has been dedicated developing elastomers with autonomic self-healing ability, which recover damages without need for an external or internal source healing agents. This work investigates behavior epoxidized natural rubber (ENR) two different epoxidation levels (25 and 50 mol % epoxidation) corresponding unfunctionalized rubber,...

Polymer films of rice starch/Polyvinyl alcohol (PVA) were prepared by casting method. Different blends made varying the concentration starch and PVA. Tensile strength (TS) elongation at break (Eb) studied. Films up PVA with a ratio 2:8 showed highest TS. 10% sugar was added TS giving four composition Starch/PVA blend in order to increase Eb. 1:8:1 Eb recorded value 14.96MPa 637% respectively. The physico-mechanical properties incorporated improved grafting acrylic monomer aid UV radiation. A...

The development of materials with the ability intrinsic self-repairing after damage in a fashion resembling that living tissues has important scientific and technological implications, particularly relation to cost-effective approaches toward management materials. Natural rubbers epoxy functional groups macromolecular chain (ENR) ethylene-methacrylic acid ionomers having partially neutralized metal ions possess behavior following high energy impacts. This research investigates both ENR...

Jute fabric-reinforced poly(caprolactone) biocomposites (30–70% jute) were fabricated by compression molding. Tensile strength, tensile modulus, bending modulus and impact strength of the non-irradiated composites (50% found to be 65 MPa, 0.75 GPa, 75 4.2 GPa 6.8 kJ/m2, respectively. The irradiated with gamma radiation at different doses (50–1000 krad) a dose rate 232 krad/hr mechanical properties investigated. containing 50% jute showed improved physico-mechanical properties. degradation...

One of the most crucial challenges for global socio-technical domain nowadays is support unprecedented use cases a variety applications such as augmented reality, 3D holographic telepresence, Industry 4.0, robotics, e-health, and pervasive connectivity. In this environment, beyond 5G intelligent networks that are able to provide enhanced flexibility through dynamic allocation system's resources, while realizing perceived zero-latency vision, envisioned ensure smooth transition toward 6G. The...

The development of autonomous healing material has an enormous scientific and technological interest. In this context, research work deals with the investigation behavior epoxidized natural rubber (ENR) its blends ethylene methacrylic acid ionomers. ENR containing two different ionomers [poly(ethylene-co-methacrylic sodium salt) (EMNa) poly(ethylene-co-methacrylic zinc (EMZn)] been studied by ballistic puncture tests. Interestingly, EMNa/ENR exhibit complete just after test but EMZn/ENR do...

The PP multilayer film/foams prepared by the coextrusion technique possess a unique solid/porous alternating horizontal architecture, in which film layers can effectively suppress premature rupture of cells foam layers. This paper introduces strong and lightweight layered cellular structure developed through optimized uniaxial drawing coextruded film/foams. Moreover, systematic study reveals effects orientation on properties oriented Formation subcellular interconnected porous decreases bulk...

Abstract The chitosan/starch blend films of 2:1 ratio were prepared by solution casting. Tensile strength (TS) and elongation at break (%Eb) film found to be 9.33 MPa 3.6%, respectively. (2% Chitosan) soaked in six different formulations methylmethacrylate (MMA) monomer aliphatic urethane diacrylate oligomer (M-1200) time intervals (1–5 min) irradiated under UV radiation intensities (5–35 pass). Formulations containing 43% MMA 15% methanol showed 209% increase TS 25th pass for 4 min soaking...

A dual-stage actuator system consists of a coarse for large motion and micro-actuator facilitating small but precise to improve tracking performance. Piezoelectric made from PZT (Lead-Zirconium-Titanium) has been popular choice as the secondary stage. However, advantage gained by precision is somewhat lost inherent hysteresis nonlinearity actuator, if not compensated. This paper presents rigorous analysis modeling its compensation in servo system. For controller dual-stage, simple design...

Jute fabrics/gelatin biocomposites were fabricated using compression molding. The fiber content in the composite varied from 20–60 wt%. Composites subjected to mechanical, thermal, water uptake and scanning electron microscopic (SEM) analysis. Composite contained 50 wt% jute showed best mechanical properties. Tensile strength, tensile modulus, bending modulus impact strength of 50% composites found be 85 MPa, 1.25 GPa, 140 MPa 9 GPa 9.5 kJ/m2, respectively. Water properties at room...

The mechanical properties of the coir fibers were evaluated in this study. Tensile strength (TS), Young’s modulus (YM) and elongation at break (Eb%) virgin found to be 152 MPa, 5.3 GPa 36%, respectively. Coir treated with ultraviolet (UV) radiation improve significantly. fiber-reinforced ethylene glycol dimethacrylate (EGDMA)-based composite was prepared characterized. surface modified monomer EGDMA under UV radiation. Soaking time, (EGDMA) concentration intensities optimized over...

Abstract In this work, the effect of processing conditions on thermal behavior a commercial poly( L ‐lactic acid) (PLLA) was investigated. particular, PLLA having very high molecular weight processed by discontinuous mixer at different mixing conditions. The molar mass variation investigated size exclusion chromatography–multiangle laser light scattering chromatography, and characteristics were detected conventional differential scanning calorimetry dynamic mechanical analysis. Tensile tests...

A dual-stage piezoelectric shear-mode actuation scheme aiming at high-density hard disk drive applications is designed, simulated, and experimentally evaluated. In this scheme, a single-crystal microactuator installed between suspension slider for realizing magnetic head nanopositioning in drives. The single-crystal-based dedicatedly designed made of ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math...

Abstract Experiment Centric Pedagogy (ECP) Teaching Approach is a revolutionary way of introducing core and fundamental topics in STEM through relevant practical hands-on sessions that are carefully incorporated into the lectures. The philosophy ECP students learn better by doing. Hence, it promotes implementation theories fields using inexpensive basic elements to develop portable but extremely effective units for use these students. Portability enables conduct experiments at comfort their...

The head positioning servo system in hard disk drive is implemented nowadays using a dual-stage actuator—the primary stage consisting of voice coil motor actuator providing long range motion and the secondary controlling position read/write with fine resolution. Piezoelectric micro-actuator made lead zirconate titanate (PZT) has been popular choice for stage. However, PZT exhibits hysteresis—an inherent nonlinear characteristic piezoelectric material. advantage expected from somewhat lost by...

Abstract The biodegradable flexible chitosan film was prepared by solution casting. physico-mechanical properties, polymer loading (PL), gel content and water uptake of the were studied. tensile strength (TS) % elongation at break (Eb) uncured 7.0 (MPa) 8%, respectively. Four formulations developed using 3-trimethoxyl silyl propylmethacrylate (TSPMA) (varied from 10–80% weight) in methanol along with photoinitator (Darocur-1664). raw films then soaked cured under UV radiation different...