Sandwiched cellulose nanofiber /boron nitride nanosheet /Ti3C2Tx MXene composite film with high electromagnetic shielding and thermal conductivity yet insulation performance

2021 ◽  
pp. 108974
Author(s):  
Ying Shang ◽  
Youxin Ji ◽  
Jingwen Dong ◽  
Gui Yang ◽  
Xiaodong Zhang ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Boron Nitride ◽  
Composite Film ◽  
Electromagnetic Shielding ◽  
Cellulose Nanofiber ◽  
Boron Nitride Nanosheet ◽  
Insulation Performance

scholarly journals Sustainable Boron Nitride Nanosheet-Reinforced Cellulose Nanofiber Composite Film with Improved Mechanical Properties and Oxygen Barrier without the Cost of Color and Brittleness

2018 ◽  
Author(s):  
Hoang-Linh Nguyen ◽  
Zahid Hanif ◽  
Seul-A. Park ◽  
Bong Gill Choi ◽  
Thang Hong Tran ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Aqueous Solution ◽  
Boron Nitride ◽  
Composite Film ◽  
Food Packaging ◽  
Color Change ◽  
Cellulose Nanofiber ◽  
Oxygen Barrier ◽  
Boron Nitride Nanosheet

Herein, we introduce a boron nitride nanosheet (BNNS)-reinforced cellulose nanofiber (CNF) film as a sustainable oxygen barrier film that can potentially be applied in food packaging. Most of commodity plastics are oxygen-permeable. CNF exhibits an ideal oxygen transmittance rate (OTR) of <1 cc/m2/day in highly controlled conditions. A CNF film typically fabricated by the air drying of a CNF aqueous solution reveals an OTR of 19.08 cc/m2/day. The addition of 0-5 wt% BNNS to the CNF dispersion before drying results in a composite film with highly improved OTR, 4.7 cc/m2/day, which is sufficient for meat and cheese packaging. BNNS as a 2D nanomaterial increases the pathway of oxygen gas and reduces the chances of pin-hole formation during film fabrication involving water drying. In addition, BNNS improves the mechanical properties of the CNF films (Young’s modulus and tensile strength) without significant elongation reductions, probably due to the good miscibility of CNF and BNNS in the aqueous solution. BNNS addition also produces negligible color change, which is important for film aesthetics. An in vitro cell experiment was performed to reveal the low cytotoxicity of the CNF/BNNS composite. This composite film has great potential as a sustainable high-performance food packaging material.

High thermal conductivity property of polyamide-imide/boron nitride composite films by doping boron nitride quantum dots

2019 ◽  
Vol 7 (44) ◽  
pp. 13896-13903 ◽  
Author(s):  
Shuaishuai Zhou ◽  
Tongle Xu ◽  
Fang Jiang ◽  
Na Song ◽  
Liyi Shi ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Quantum Dots ◽  
Boron Nitride ◽  
Composite Film ◽  
Self Assembly ◽  
Composite Films ◽  
Conductivity Property ◽  
Assembly Method ◽  
Boron Nitride Nanosheet ◽  
Evaporation Induced Self Assembly

In this study, we report a flexible polyamide-imide (PAI)/boron nitride nanosheet (BNNS) composite film with improved thermal conductivity by doping boron nitride quantum dots (BNQDs) using an evaporation-induced self-assembly method.

scholarly journals Robust Biomimetic Nacreous Aramid Nanofiber Composite Films with Ultrahigh Thermal Conductivity by Introducing Graphene Oxide and Edge-Hydroxylated Boron Nitride Nanosheet

Nanomaterials ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2544
Author(s):  
Cenkai Xu ◽  
Chengmei Wei ◽  
Qihan Li ◽  
Zihan Li ◽  
Zongxi Zhang ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Graphene Oxide ◽  
Boron Nitride ◽  
Composite Film ◽  
Performance Enhancement ◽  
Composite Films ◽  
Dielectric Materials ◽  
Boron Nitride Nanosheet ◽  
Brick And Mortar ◽  
Thermally Conductive

Dielectric materials with excellent thermally conductive and mechanical properties can enable disruptive performance enhancement in the areas of advanced electronics and high-power devices. However, simultaneously achieving high thermal conductivity and mechanical strength for a single material remains a challenge. Herein, we report a new strategy for preparing mechanically strong and thermally conductive composite films by combining aramid nanofibers (ANFs) with graphene oxide (GO) and edge-hydroxylated boron nitride nanosheet (BNNS-OH) via a vacuum-assisted filtration and hot-pressing technique. The obtained ANF/GO/BNNS film exhibits an ultrahigh in-plane thermal conductivity of 33.4 Wm−1K−1 at the loading of 10 wt.% GO and 50 wt.% BNNS-OH, which is 2080% higher than that of pure ANF film. The exceptional thermal conductivity results from the biomimetic nacreous “brick-and-mortar” layered structure of the composite film, in which favorable contacting and overlapping between the BNNS-OH and GO is generated, resulting in tightly packed thermal conduction networks. In addition, an outstanding tensile strength of 93.3 MPa is achieved for the composite film, owing to the special biomimetic nacreous structure as well as the strong π−π interactions and extensive hydrogen bonding between the GO and ANFs framework. Meanwhile, the obtained composite film displays excellent thermostability (Td = 555 °C, Tg > 400 °C) and electrical insulation (4.2 × 1014 Ω·cm). We believe that these findings shed some light on the design and fabrication of multifunctional materials for thermal management applications.

Preparation of a thermally conductive biodegradable cellulose nanofiber/hydroxylated boron nitride nanosheet film: the critical role of edge-hydroxylation

2018 ◽  
Vol 6 (25) ◽  
pp. 11863-11873 ◽  
Author(s):  
Kai Wu ◽  
Ping Liao ◽  
Rongni Du ◽  
Qin Zhang ◽  
Feng Chen ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Boron Nitride ◽  
Nanocomposite Film ◽  
Critical Role ◽  
Cellulose Nanofiber ◽  
Novel Treatment ◽  
Boron Nitride Nanosheet ◽  
Thermally Conductive

A biodegradable and flexible CNF/EOH-BNNS nanocomposite film shows largely improved thermal conductivity by means of a novel treatment of edge-hydroxylation.

scholarly journals Sustainable Boron Nitride Nanosheet-Reinforced Cellulose Nanofiber Composite Film with Oxygen Barrier without the Cost of Color and Cytotoxicity

Polymers ◽  
2018 ◽  
Vol 10 (5) ◽  
pp. 501 ◽  
Author(s):  
Hoang-Linh Nguyen ◽  
Zahid Hanif ◽  
Seul-A Park ◽  
Bong Choi ◽  
Thang Tran ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Composite Film ◽  
Cellulose Nanofiber ◽  
Oxygen Barrier ◽  
Nanofiber Composite ◽  
Boron Nitride Nanosheet ◽  
The Cost

Formation and Structural Characteristic of Perpendicularly Aligned Boron Nitride Nanosheet Bridges in Polymer/Boron Nitride Composite Film and Its Thermal Conductivity

2011 ◽  
Vol 50 (1S2) ◽  
pp. 01BJ05 ◽  
Author(s):  
Hong-Baek Cho ◽  
Tadachika Nakayama ◽  
Tsuneo Suzuki ◽  
Satoshi Tanaka ◽  
Weihua Jiang ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Boron Nitride ◽  
Composite Film ◽  
Structural Characteristic ◽  
Boron Nitride Nanosheet

Aluminum Borate/Boron Nitride Nanosheet Fibers for Enhancing the Thermal Conductivity of Polymer Composites

2021 ◽  
Vol 4 (2) ◽  
pp. 2136-2142
Author(s):  
Xiao Hou ◽  
Zhenbang Zhang ◽  
Xianzhe Wei ◽  
Yue Qin ◽  
Guichen Song ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Boron Nitride ◽  
Polymer Composites ◽  
Aluminum Borate ◽  
Boron Nitride Nanosheet

Improvement of thermal conductivity of composite film composed of cellulose nanofiber and nanodiamond by optimizing process parameters

Cellulose ◽  
2018 ◽  
Vol 25 (7) ◽  
pp. 3973-3983 ◽  
Author(s):  
Yuichi Tominaga ◽  
Kimiyasu Sato ◽  
Yuji Hotta ◽  
Hitoshi Shibuya ◽  
Mai Sugie ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Composite Film ◽  
Process Parameters ◽  
Cellulose Nanofiber
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