scholarly journals Comparison of Characteristics of Poly(Nisopropylacrylamide) in Bulk Hydrogel and Ball-milled Microgel Forms

2021 ◽  
Vol 7 (2) ◽  
pp. 531-534
Author(s):  
Jennifer Huling ◽  
Sabine Illner ◽  
Niels Grabow ◽  
Michael Teske
Keyword(s):  
Mechanical Milling ◽  
Ball Mill ◽  
Milling Process ◽  
Temperature Sensitive

Abstract Poly(N-isopropylacrylamide) hydrogels are a popular temperature sensitive biomaterial. Bulk hydrogels can be quickly and easily processed into microgels using a ball mill. However, there is no information on whether the mechanical milling process affects critical PNIPAM characteristics. In this work, we compare swelling and thermo-responsive properties for a series of PNIPAM gels in bulk and microgel forms.

Structural Evaluation of Ti-22.2Si-11.1B Powders Milled with PCA Addition

2008 ◽  
Vol 591-593 ◽  
pp. 147-153
Author(s):  
Gilbert Silva ◽  
Erika Coaglia Trindade Ramos ◽  
N.S. da Silva ◽  
Alfeu Saraiva Ramos
Keyword(s):  
Electron Microscopy ◽  
Ball Milling ◽  
Ball Mill ◽  
Milling Process ◽  
Argon Atmosphere ◽  
X Ray Diffraction ◽  
X Ray ◽  
Structural Evaluation ◽  
Equilibrium Structures ◽  
Scanning Electron

A large amount of the Ti6Si2B compound can be formed by mechanical alloying and subsequent heat treatment from the elemental Ti-22.2at%Si-11.1at%B powder mixture, but the yield powder after ball milling is reduced due to an excessive agglomeration of ductile particles on the balls and vial surfaces. This work reports on the structural evaluation of Ti-22.2at%Si-11.1at%B powders milled with PCA addition, varying its amount between 1 and 2 wt-%. The milling process was carried out in a planetary ball mill under argon atmosphere, and the milled powders were then heated at 1200oC for 1h under Ar atmosphere in order to obtain equilibrium structures. Samples were characterized by X-ray diffraction, scanning electron microscopy, and thermal analysis. Results revealed that the PCA addition reduced the excessive agglomeration during the ball milling of Ti-22.2at-%Si-11.1at-%B powders. After heating at 1200oC for 1h, the Ti5Si3, Ti3O and/or Ti2C phases were preferentially formed in Ti-22.2at%Si-11.1at%B powders milled with PCA addition, and the Ti6Si2B formation was inhibited.

Real-Time Slurry Characteristic Analysis During Ball Milling Using Vibration Data

2021 ◽  
Author(s):  
Hyeondeok Jeong ◽  
Jungwon Yu ◽  
Youngjae Lee ◽  
Sung-min Lee ◽  
Sung-Soo Ryu ◽  
...  
Keyword(s):  
Real Time ◽  
Ball Milling ◽  
Ball Mill ◽  
Milling Process ◽  
Circulation System ◽  
Ceramic Processing ◽  
Characteristic Analysis ◽  
Strong Negative Correlation ◽  
Vibration Data ◽  
Slurry Viscosity

Abstract The characteristics of an internal slurry were analyzed during ball milling, which is commonly utilized in ceramic processing. We used a device with a capacity of 50 L because this is the size employed in industries, and built a circulation system to collect the slurry during the milling process. The properties of the slurry were characterized in terms of their particle size and viscosity, while vibration data were collected from the side of the ball mill drum in real time. A fast Fourier transform was performed on the vibration data, allowing the energy to be calculated and compared with the slurry characteristics. The vibration data in the 3–4 kHz range showed a strong negative correlation with the slurry viscosity. Our results confirm that the characteristics of the internal slurry can be monitored in real time using vibration data collected during ball milling.

Absorption property of C@CIPs composites by the mechanical milling process

2017 ◽  
Vol 123 (9) ◽  
Author(s):  
Ting Liu ◽  
Li Zhou ◽  
Dianliang Zheng ◽  
Yonggang Xu
Keyword(s):  
Mechanical Milling ◽  
Milling Process ◽  
Absorption Property

scholarly journals Synthesis of Nanocrystalline WC Single-Phase Refractory via Mechanical Milling

2011 ◽  
Vol 2011 ◽  
pp. 1-5 ◽  
Author(s):  
Mansour Razavi ◽  
Mohammad Reza Rahimipour ◽  
Rahim Yazdani-Rad
Keyword(s):  
Mechanical Milling ◽  
Ball Mill ◽  
Single Phase ◽  
Milling Time ◽  
Raw Materials ◽  
Planetary Ball Mill ◽  
Crystalline Size ◽  
Nanometer Scale

In this paper the possibility of production of nanocrystalline WC single-phase by mechanical milling has been investigated. The raw materials containing tungsten and carbon with WC as nucleation were milled in a planetary ball mill and sampled in different times. Studies showed that after 75 hours of milling the WC with W2C was produced and remained constant in higher milling time. Adding WC to raw materials at the beginning process leads to the fact that after 50 hours of milling only WC was synthesized without undesirable W2C phase. This material remained stable until higher times of milling too. From broadening of XRD peaks, the crystalline size in synthesized WC was estimated in nanometer scale which lower than the system containing primary WC, and it means that the strain in this system was lower than first system.

scholarly journals Quasicrystals and Approximant Crystals Subjected to the Mechanical Milling Process in the Mg-Al-Zn Alloy System.

1995 ◽  
Vol 42 (2) ◽  
pp. 215-219
Author(s):  
Kayo Chatani ◽  
Tsunehiro Takeuchi ◽  
Toshiharu Fukunaga ◽  
Uichiro Mizutani
Keyword(s):  
Mechanical Milling ◽  
Alloy System ◽  
Milling Process ◽  
Zn Alloy
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