Fabrication of tough epoxy with shape memory effects by UV-assisted direct-ink write printing

3D printing of epoxy-based shape memory polymers with high mechanical strength, excellent thermal stability and chemical resistance is highly desirable for practical applications.

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Shape memory polymers with interconnected nanopores and high mechanical strength

Journal of Polymer Science Part B Polymer Physics ◽

10.1002/polb.24437 ◽

2017 ◽

Vol 56 (2) ◽

pp. 125-130 ◽

Cited By ~ 5

Author(s):

Qiucheng Yang ◽

Cuicui Ye ◽

Jingxin Zhao ◽

Depei Chen ◽

Biwei Weng ◽

...

Keyword(s):

Mechanical Strength ◽

Shape Memory ◽

Shape Memory Polymers ◽

High Mechanical Strength

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Thermorheological characteristics and comparison of shape memory polymers fabricated by novel 3D printing technique

Functional Materials Letters ◽

10.1142/s1793604718500315 ◽

2018 ◽

Vol 11 (02) ◽

pp. 1850031 ◽

Cited By ~ 2

Author(s):

Rizwan Ul Hassan ◽

Soohwan Jo ◽

Jongwon Seok

Keyword(s):

Thermal Stability ◽

3D Printing ◽

Ethylene Glycol ◽

Shape Memory ◽

Viscoelastic Properties ◽

Shape Memory Polymers ◽

Ethylene Glycol Dimethacrylate ◽

Glycol Dimethacrylate ◽

Printing Technique ◽

3D Printing Technique

The feasibility of fabrication of shape memory polymers (SMPs) was investigated using a customized 3-dimensional (3D) printing technique with an excellent resolution that could be less than 100 microns. The thermorheological effects of SMPs were adjusted by contact and non-contact triggering, which led to the respective excellent shape recoveries of 100% and 99.89%. Thermogravimetric analyses of SMPs resulted in a minor weight loss, thereby revealing good thermal stability at higher temperatures. The viscoelastic properties of SMPs were measured using dynamic mechanical analyses, exhibiting increased viscous and elastic characteristics. Mechanical strength, thermal stability and viscoelastic properties, of the two SMPs were compared [di(ethylene) glycol dimethacrylate (DEGDMA) and poly (ethylene glycol) dimethacrylate (PEGDMA)] to investigate the shape memory behavior. This novel 3D printing technique can be used as a promising method for fabricating smart materials with increased accuracy in a cost-effective manner.

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A novel 3D-printable hydrogel with high mechanical strength and shape memory properties

Journal of Materials Chemistry C ◽

10.1039/c9tc04945b ◽

2019 ◽

Vol 7 (47) ◽

pp. 14913-14922 ◽

Cited By ~ 6

Author(s):

Qiang Zhou ◽

Kaixiang Yang ◽

Jiaqing He ◽

Haiyang Yang ◽

Xingyuan Zhang

Keyword(s):

Mechanical Properties ◽

3D Printing ◽

Mechanical Strength ◽

Shape Memory ◽

Three Dimensional ◽

High Mechanical Strength ◽

Shape Memory Properties ◽

Potential Applications

The three-dimensional (3D)-printing of hydrogels with excellent mechanical properties has attracted extensive attention owing to their potential applications in many fields.

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A high-throughput synthesis of large-sized single-crystal hexagonal boron nitride on a Cu–Ni gradient enclosure

RSC Advances ◽

10.1039/d0ra00734j ◽

2020 ◽

Vol 10 (27) ◽

pp. 16088-16093

Author(s):

Tianyu Zhu ◽

Yao Liang ◽

Chitengfei Zhang ◽

Zegao Wang ◽

Mingdong Dong ◽

...

Keyword(s):

Thermal Stability ◽

Boron Nitride ◽

Mechanical Strength ◽

Single Crystal ◽

High Throughput ◽

Hexagonal Boron Nitride ◽

Electronic Devices ◽

Two Dimensional ◽

Excellent Thermal Stability ◽

High Mechanical Strength

Large monolayer two-dimensional h-BN can be employed in novel electronic devices because of its thin insulation, excellent thermal stability, and high mechanical strength.

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Three-dimensional Graphene Coated Shape Memory Polyurethane Foam with Fast Responsive Performance

Journal of Materials Chemistry C ◽

10.1039/d1tc01315g ◽

2021 ◽

Author(s):

Tianjiao Wang ◽

Jun Zhao ◽

Chuanxin Weng ◽

Tong Wang ◽

Yayun Liu ◽

...

Keyword(s):

Shape Memory ◽

Polyurethane Foam ◽

Three Dimensional ◽

Shape Memory Polymers ◽

Practical Applications ◽

External Stimuli ◽

Shape Memory Polyurethane

Shape memory polymers (SMPs) that change shapes as designed by external stimuli have become one of the most promising materials as actuators, sensors, and deployable devices. However, their practical applications...

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Harnessing reversible dry adhesion using shape memory polymer microparticles

RSC Advances ◽

10.1039/d1ra01473k ◽

2021 ◽

Vol 11 (32) ◽

pp. 19616-19622

Author(s):

Wenbing Li ◽

Junhao Liu ◽

Wanting Wei ◽

Kun Qian

Keyword(s):

Shape Memory ◽

Shape Memory Polymer ◽

Shape Memory Polymers ◽

Memory Effects ◽

Reversible Adhesion ◽

Dry Adhesion ◽

Bonding Property ◽

Shape Memory Effects ◽

Polymer Microparticles

Shape memory polymers can provide excellent bonding property because of their shape memory effects. This paper proposes an adhesive unit that is capable of repeatable smart adhesion and exhibits reversible adhesion under heating.

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Structural multi-colour invisible inks with submicron 4D printing of shape memory polymers

Nature Communications ◽

10.1038/s41467-020-20300-2 ◽

2021 ◽

Vol 12 (1) ◽

Author(s):

Wang Zhang ◽

Hao Wang ◽

Hongtao Wang ◽

John You En Chan ◽

Hailong Liu ◽

...

Keyword(s):

Shape Memory ◽

Information Hiding ◽

Shape Memory Polymer ◽

Shape Memory Polymers ◽

Photonic Devices ◽

Temperature Sensitive ◽

4D Printing ◽

Two Photon ◽

Shape Memory Effects ◽

Nanoscale Structure

AbstractFour-dimensional (4D) printing of shape memory polymer (SMP) imparts time responsive properties to 3D structures. Here, we explore 4D printing of a SMP in the submicron length scale, extending its applications to nanophononics. We report a new SMP photoresist based on Vero Clear achieving print features at a resolution of ~300 nm half pitch using two-photon polymerization lithography (TPL). Prints consisting of grids with size-tunable multi-colours enabled the study of shape memory effects to achieve large visual shifts through nanoscale structure deformation. As the nanostructures are flattened, the colours and printed information become invisible. Remarkably, the shape memory effect recovers the original surface morphology of the nanostructures along with its structural colour within seconds of heating above its glass transition temperature. The high-resolution printing and excellent reversibility in both microtopography and optical properties promises a platform for temperature-sensitive labels, information hiding for anti-counterfeiting, and tunable photonic devices.

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Ultrahigh energy density with excellent thermal stability in lead-free multilayer ceramic capacitors via composite strategy design

Journal of Materials Chemistry A ◽

10.1039/d1ta07643d ◽

2021 ◽

Author(s):

Peiyao Zhao ◽

Lingling Chen ◽

Longtu Li ◽

Xiaohui Wang

Keyword(s):

Thermal Stability ◽

Energy Density ◽

Low Energy ◽

Electronic Systems ◽

Ultrahigh Energy ◽

Multilayer Ceramic Capacitors ◽

Excellent Thermal Stability ◽

Practical Applications ◽

Multilayer Ceramic ◽

Strategy Design

Dielectric capacitor has received growing interest for advanced electrical and electronic systems. However, the low energy density and poor thermal stability at high temperature severely hinder its practical applications. Herein,...

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Advances in Halloysite Nanotubes–Polysaccharide Nanocomposite Preparation and Applications

Polymers ◽

10.3390/polym11060987 ◽

2019 ◽

Vol 11 (6) ◽

pp. 987 ◽

Cited By ~ 5

Author(s):

Yang Wu ◽

Yongzhi Zhang ◽

Junping Ju ◽

Hao Yan ◽

Xiaoyu Huang ◽

...

Keyword(s):

Wastewater Treatment ◽

Aspect Ratio ◽

Mechanical Strength ◽

Recent Progress ◽

Halloysite Nanotubes ◽

Large Aspect Ratio ◽

Swelling Properties ◽

High Mechanical Strength ◽

Practical Applications ◽

Treatment Application

Halloysite nanotubes (HNTs), novel 1D natural materials with a unique tubular nanostructure, large aspect ratio, biocompatibility, and high mechanical strength, are promising nanofillers to improve the properties of polymers. In this review, we summarize the recent progress toward the development of polysaccharide-HNTs composites, paying attention to the main existence forms and wastewater treatment application particularly. The purification of HNTs and fabrication of the composites are discussed first. Polysaccharides, such as alginate, chitosan, starch, and cellulose, reinforced with HNTs show improved mechanical, thermal, and swelling properties. Finally, we summarize the unique characteristics of polysaccharide-HNTs composites and review the recent development of the practical applications.

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