News2024
Our lab has a new member!
Yamato SAN-Yoshi, a first-year master's student, has joined our lab members. We look forward to his future endeavors! （To Member page）
Collaboration within the department begins.
We have decided to promote research on environmentally friendly polymer materials together with Fibro-Environmental Engineering Laboratory (Ino Laboratory).
Graduation ceremony was held.
Naoto Sashiwa, a master's course student, successfully completed his master's degree. Congratulations! We look forward to his future activities!
Published New Research Paper.(2023/09/19 Accepted)
"Characterization of Nanoporous Poly(Lactic Acid) Microfibers Using a Simplified Centrifugal Spinning Method", Kazushi Yamada* and Chieko Narita, Materials Science Forum, Vol.1117, pp 1-8 (2024).
News2023
Published New Research Paper.(2023/10/10 Accepted)
"Development of Glossy and UV-Resistant Urushi Coatings by Thermal Polymerization", Chieko Narita, Kazushi Yamada*, Progress in Organic Coatings, 186 (2024) 108032.
Published New Research Paper.(2023/08/06 Accepted)
"Improving the lightfastness and thermal stability of black urushi (oriental lacquer) by kraft lignin oleate", Takao Tsuchiya, Chieko Narita, Kazushi Yamada, Adrian Moreno, Mika H. Sipponen, Hitomi Tsuda and Yoko Okahisa, Journal of Wood Science, 69, Article number 28 (2023).
Published New Research Paper.(2023/06/24 Accepted)
"Novel Environmentally Superior Tribomaterial with Superlow Friction: 100% Cellulose Nanofiber Molding", Hikaru Okubo, Hiromi Hashiba, Toru Inamochi, Kaisei Sato, Shinya Sasaki, Kazushi Yamada, and Ken Nakano, Tribology Lettters, 71, 83 (2023).
Published New Research Paper.(2023/06/05 Accepted)
"Tribological properties of 100% cellulose nanofiber (CNF) molding under dry- and boundary lubrication-conditions at CNF/steel contacts", Hikaru Okubo, Ryota Nakae, Daisuke Iba, Kazushi Yamada, Hiromi Hashiba, Ken Nakano, Kaisei Sato, and Shinya Sasaki, Cellulose (2023).
Our lab has a new member!
Ji-Bum LEE, Takuji OSAWA, Ryuya TESHIMA, a first-year master's student, has joined our lab members. We look forward to his future endeavors!（To Member page）
Published New Research Paper.(2022/11/26 Accepted)
"Characteristics of urushi film prepared through thermal polymerization", Chieko Narita, Yoko Okahisa, Saori Kitaguchi, Kazushi Yamada, Journal of Coatings Technology and Research (2023). (DOI: 10.1007/s11998-022-00745-4)
Published New Research Paper.(2023/02/16 Accepted)
"Preparation of transparent fibroin nanofibril-reinforced chitosan films with high toughness and thermal resistance", Yuno Yasunaga, Yuji Aso, Kazushi Yamada, Yoko Okahisa*, Carbohydrate Polymer Technologies and Applications, 5 (2023) 100299. (DOI: 10.1016/j.carpta.2023.100299)
Published New Research Paper.(2023/01/28 Accepted)
"Isothermal crystallization process and thermal analysis of polylactic acid/cotton fiber composites during thermal degradation", Linmei Zhang, Jiaru Zhou, Hiroki Sakamoto, and Kazushi Yamada*, Polymer-Plastics Technology and Materials (2023) 2175220. (DOI: 10.1080/25740881.2023.2175220)
Published New Research Paper.
"No-Surface-Damage Laser Welding of Fluoroplastic Sheets： Welding of PFA and PTFE Sheets", Kimitoshi Sato*, Kazushi Yamada, Vol.35 No.2, Seikei-Kakou (2023), pp.63-70.
News2022
Published New Research Paper.(2022/12/17 Accepted)
"Effects of Urushi and Sumi ink on the mechanical properties and water repellency of Washi paper", Chieko Narita, Kazushi Yamada, Journal of Polymer Research (2023) 30;39. (DOI: 10.1007/s10965-022-03416-5)
We have a new member in our lab!
Research student LEE JI BUM has joined our lab members. We look forward to her future endeavors!（To Member page）
Our lab has a new member!
Naoto Sashiwa, a first-year master's student, has joined our lab members. We look forward to his future endeavors!（To Member page）
We have revamped our laboratory's website!
Published New Research Paper.(2022/03/14 Accepted)
"Effect of surface treatment of cotton fibers on the durability of polylactic acid/cotton-fiber biocomposites", Linmei Zhang, Jiaru Zhou, Hiroki Sakamoto & Kazushi Yamada*, Advanced Composite Materials (2022) 2055515
Graduation Ceremony
We are pleased to announce that a working doctoral student, Takehiro Fujii, has received his doctoral degree (Ph.D.). Congratulations! We look forward to your continued success in the years to come!
【Title】Study on Durability Evaluation of Plastic Pipes for Hot Water Piping
News2021
Published New Research Paper.(2021/10/11 Accepted)
"A novel approach of adhesive property of cellulose nanofibers obtained from the discarded wooden part of Kozo plant", Chieko Narita*, Yoko Okahisa, Kazushi Yamada, Applied Nanoscience, 2021, Vol.11, PP.2717-2726.
Published New Research Paper.(2021/11/15 Accepted)
"Development of highly oil-absorbent polylactic-acid microfibers with a nanoporous structure via simple one-step centrifugal spinning", Linmei Zhang, Chieko Narita, Yuki Himeda, Hidekazu Honma, Kazushi Yamada*, Separation and Purification Technology, 282 (2022) 120156.
Graduation & Entrance ceremonies were held.
Dr. Badin PINPATHOMRAT, a doctoral student from Thailand, has successfully completed his doctoral degree. Thank you very much for your hard work. We look forward to his future activities in Thailand.
Also, Ms. Zhou, a master's student, has successfully completed his master's degree. I am very happy for her. The entrance ceremony was also held today, and the entrance representative took the oath. It was wonderful. I look forward to seeing her in the next three years as her work towards her doctoral degree!
Published New Research Paper.
"Evaluation of degradation of ultraviolet-C irradiated polylactic acid/carbon-fiber composites using fluorescence spectroscopy",
Badin Pinpathomrat, Chieko Narita, Atsushi Yokoyama & Kazushi Yamada, Advanced Composite Materials, 2021, Vol.30, 1943108.
Graduation ceremony was held.
Even though we did not have enough time for research this year due to the corona disaster, the two M2 students did a great job in organizing their research. Thank you very much for your hard work, and I look forward to your future endeavors as you start your new careers in April! Please keep up the good work. And as a graduation present, Mr. Ogawa, our research assistant, made a 3D printed "glasses and phone stand" (made of 100% eco-friendly polylactic acid). Thank you very much!
Ms. Jiaru Zhou (M2) won the Best Presentation Award at Fibro Symposium. Congratulations!
News2020
High school and university collaboration classes was just finished.
On the morning of Saturday, November 7, I gave a class on making kumihimo at Ohki High School in Kyoto City. This was the fourth year in a row. This time, although the corona pandemic was still ongoing, we took measures to prevent the spread of the infection, and the first-year students enjoyed making kumihimo, one of the traditional crafts in Kyoto. As in the previous year, the final report was written in the style of a QR code that was read by each student with a smartphone, and the answers were reflected on the screen using a projector in real time. I was impressed with the way the program incorporated IT in many places. I'd like to give the class again next year!
Published New Research Paper.
"Fabrication and characterization of a novel silk fibroin film with UV and thermal resistance", Yoko Okahisa, Chieko Narita, Kazushi Yamada*, Materials Today Communications 25 (2020) 101630.
Published New Research Paper.
"Characterization of Ground Silk Fibroin through Comparison of Nanofibroin and Higher Order Structures", Chieko Narita*, Yoko Okahisa, Isao Wataoka, and Kazushi Yamada*, ACS Omega, 2020.
Published New Research Paper.
"Comparison of Polyvinyl Alcohol Films Reinforced with Cellulose Nanofibers Derived from Oil Palm by Impregnating and Casting Methods", Yoko Okahisa*, Kenichiro Matsuoka, Kazushi Yamada, Isao Wataoka, Carbohydrate Polymers, Vol.250 No.116907, 2020.
Published New Research Paper.
"The effect of UV irradiation on polyamide 6/carbon-fiber composites based on three-dimensional printing", Badin Pinpathomrat, Kazushi Yamada*, Atsushi Yokoyama, SN Applied Sciences, Vol.2, article number 1518, 2020. (https://doi.org/10.1007/s42452-020-03319-4).
Published New Research Topics.
"Research and Future Prospects on Heat-Sealing for Plastic Films", Kazushi Yamada*, Journal of Packaging Science and Technology, Japan, Vol.29, No.4, pp.275-280, 2020.
A new research assistant has joined our laboratory.
A new research student has joined our laboratory.
News2019
Assoc. Prof. Yamada had an invited talk at The 16th Pacific Polymer Conference (PPC16).
Title: "A Novel Technique in the Preparation of Cellulose Nanofiber/silk Fibroin Fiber Composite Films", Kazushi Yamada (Invited Speaker)
Asian Workshop on Polymer Processing (AWPP) 2019
Research results were presented at Asian Workshop on Polymer Processing (AWPP) 2019 during October 28-31 in China.
- "NO DAMAGE LASER WELDING OF PFA AND PTFE SHEETS",
Kimitoshi Sato, Kazushi Yamada
We attended the ASP-19 international conference.
We attended the ASP-19 international conference held at KIT in Kyoto, Japan during October 14-18. Two master students presented posters at an international conference for the first time. They were a little nervous at first, but it was a great announcement. I look forward to more fulfilling content next time.
High school and university collaboration classes was just finished.
A high school/university collaboration class was held at the Kyoto Prefectural OHKI High School. The class content was KUMIHIMO braid making. This year, it was held for the third consecutive year, and students enjoyed making braids, one of the traditional crafts of Kyoto. This time, it was an experience class unlike a normal class, and the impression report was in the style of reading the printed QR code with a smartphone and writing the report on the smartphone. I was impressed that the program incorporates advanced IT. Also, on the way back, I was very happy that several students came to see me off to the school gate. I would like to teach next year again!
Academic Internship was just finished.
From September 9 (Monday) to September 13 (Friday), Mr. Tsuchiya, Department of Textile Science and Engineering, Shinshu University, came to our laboratory as an internship student. Although it was a short period of 5 days, he was seriously challenging the research topic every day, and it was a great stimulus for the members of our laboratory. If have the next opportunity, please come and visit to our laboratory!
Published New Research Paper.
Effect of Holding Time at Heat Sealed Temperature and Braid Heater for Heat Sealed Sterilized Bag", Yasuo HASHIMOTO, Yumi HASHIMOTO, Kazushi YAMADA, and Ken MIYATA, Journal of Packaging Science & Technology, Japan, Vol.28, No.4, pp.245-251, 2019.(in Japanese)
Published New Research Paper
"Preparation of Silk-Fibroin Nanofiber Film with Native β-Sheet Structure via a Never Dried-Simple Grinding Treatment", Yoko Okahisa*, Chieko Narita, Kazushi Yamada, Journal of Fiber Science and Technology, Vol.75, No.4, pp.29-34, 2019.
Newly launched as Functional Materials Laboratory (Yamada laboratory).