Materials Science and Engineering, Donghua University researcher Wang Huaping
Research and development of bio-based synthetic fiber industry and the sustainable development of the country has a very important significance. As the global population grows, human demand for energy continues to increase, reduce non-renewable resources is a problem in the future development of mankind had to face . Therefore , the pursuit of renewable energy and raw materials , is the trend of global development, bio-manufacturing industry will affect the strategic areas in the future.
" " Five "national strategic emerging industry development plan" as one of the bio-industry of seven strategic emerging industries ; " bio-industry development," second five "plan " put forward bio-based materials will replace 10-20% chemical materials ; " chemical industry" second five "development plan" put forward vigorously promote the development of bio-based chemical fiber and its raw materials.
Many biomass fiber category , at this stage there is some progress in our study also encountered some bottlenecks. For example , for the PLA fiber processing and product applications mature , the scale has reached 3000 tons / year, has been conducted in the field of clothing , non-woven , eco-friendly materials , etc., but purification of L- lactic acid , lactide synthetic fiber texture and staining are certain factors that restrict its development .
As another example , PHBV and PLA blend fibers , the key to technology and industrial breakthroughs in synthesis and preparation of reactive PHBV masterbatch resin production capacity of 500 tons / year, mainly used in high-end clothing , home textiles, of the need to address the current hybrid technology and spinning technology industry issues.
Overall technical design ideas for bio-based synthetic interdisciplinary , multi-disciplinary , interdisciplinary ; continuous, engineering , scale . Future development of two directions : the perfect application of bio-based materials and evaluation system - to support sustainable development ; complete fiber preparation system - rapid response system technology upgrades and products.
Polylactic acid fiber biomass R & D and industrialization
School of Materials Science and Engineering , Tongji University doctoral tutor Ren Jie
Poly (lactic acid) (PLA) are synthetic polymer materials biomass , is a typical biodegradable biomass plastic . Look lactic acid from the global market : in 2009 the global lactic acid market ( excluding polylactic acid portion ) of about 260,000 tons , the annual growth rate of about 10%.
The performance advantages of polylactic acid can reduce the use of fossil fuels , the use of renewable natural greenery as raw material, the use of green manufacturing processes , and to adapt the existing solid waste management system .
Polylactic acid has the following advantages : ⑴ easily available and renewable raw materials , suitable for mass production and intensification ; ⑵ barrier properties , air permeability , gloss transparency and hardness , tensile and flexural modulus than traditional plastic resin ; ⑶ more good biocompatibility. L- lactic acid monomer raw material which is human endogenous substances, polylactic acid products toxic to humans , and can be absorbed by the body without rejection , tissue matrix material can be made for medical and pharmaceutical carrier and safe for the human body to obtain U.S. FDA certification ; ⑷ completely biodegradable , can degrade into the soil in 6 to 12 months into carbon dioxide and water.
Packaging , medical and fiber are the three most popular areas of polylactic acid market applications , packaging market consumption accounts for about 70% of the total consumption of polylactic acid , medium and long term , the proportion of fibers and textiles will be raised to 50 percent , becoming the polylactic acid largest consumer market .
Next few years, the field will be the polylactic acid fiber applications fastest growing market . Polylactic acid resin obtained by a conventional spinning process of biological and synthetic, its physical properties and biocompatibility , good breathability and feel of polyester , easy to static electricity can be made of multifilament , monofilament, staple fiber , knitted material , non-woven cloth.
Advantages and PTT textile direction to be developed
Professor, College of Textiles, Donghua University Palace Mei
The main selling point of PTT textiles , hand tied with PET composite elastic fibers , on the other hand is easy to shaping the fabric . A major feature is that it can produce PTT memory fabric , easy shaping, can be folded into the handle "umbrella ", " turmeric -style " and other exaggerated shape , clothing curved profile of the human body is not limited to the surface of the further formation of the surface , pleated projections morphology .
Easy care characteristics : Storage travel produces unwanted after folding creases , can be touched by hand simply remove creases , and the handle can be restored by simply stylish clothing original form .
PTT subject to the direction and development deficiencies : the lack of a standard or elastic fiber identification ; fiber -diversity issues , such as lack of fine silk , Silk . When knitting areas of application , the lack of cotton -type yarns interwoven with underwear , casual wear , and the existence of the shadow filament interwoven fabric of uneven sculpting clothing swimwear difficult areas such issues ; woven products, the lack of new products, only plain elastic fabric, elastic yarn-dyed fabrics , crepe fabrics developed a bottleneck ; R & D investment to be sustained focus.
For the future development of polyester fiber , we can not copy or other materials PTT mode , to carefully find characteristics of each material , the ingenious combination of features is a powerful selling point. Strive chain collaboration , while advances in equipment and technology , can not wait for the introduction , the only way out is to increase the technological content and value-added products .
Focus on bio- industrial technology development
Vice President of Cathay Industrial Biotech Zhan Yihui
As the world's bio- butanol and bio- production of long -chain dicarboxylic acids leader, Cathay Industrial Biotech Ltd. erudite in bio-industrial technology development.
Biological method of long-chain dicarboxylic acid core competitiveness is reflected in the continuous improvement of the efficiency of biological conversion of monomer and polymer grade quality development. Screening platform technology companies through genetic engineering and high throughput , and continuously improve the efficiency of bioconversion and fermentation stage control of impurities generated from the source . Difficulty polymer grade quality technology development is not " pure " but " impurity ", the company has established quality standards for the industry in terms of quality of the product development of biological special nylon polymer grade monomer.
Cathay pentanediamine in major technological breakthroughs: First, high bioconversion efficiency:凯赛利with genetic engineering of microbial strains will be a key enzyme efficiency by more than 100 times , and can be transformed from a sugar amyl diamine .
Second, the aggregation level of product quality : Cathay successfully resolved pentanediamine extraction process issues into the ring , so that costs and product quality have been controlled .
Third PA5X continuous polymerization techniques and equipment : Pentanediamine has successfully developed a variety of dicarboxylic acids and polymerization process on 10 liters , 100 liters of the test reactor . 1000 tons of nylon continuous polymerization 56 scale model line has been built , is currently being debugged.
Polyester fiber technology and industrial development trends of biomass
China Sinopec Shanghai Petrochemical Co., Ltd. Polyester Ministry of Petroleum王鸣义
Global bio-based raw materials to produce biodegradable and non- degradable polymer is expected to reach 5.78 million tons by 2016 , bio-based polyester synthetic materials , bio-based PET portion of the non- biodegradable 38.9% biodegradable polylactic acid , aliphatic polyester accounting 26.1% . 2016 is expected to total bio-based polyester fibers up to 300 tons.
Biomass polyester fiber product development, including bio-based non- biodegradable polyester raw materials , bio-based biodegradable polyester materials , bio-based non- biodegradable polyester fibers , PLA polyester fibers, biodegradable aliphatic polyester fibers.Sellotape
Judging from the trend, spinning rapidly growing technology to become mainstream modified polyester copolymer modified technique allows direct spinning production costs reduced by 15 % compared to slice spinning costs.
Improve functionality and partially dyed wearing comfort "super spun cotton" in terms of processing costs , processing chain overall energy saving and functional long-term retention have demonstrated a great advantage. No heavy metals in the polyester synthetic polyester , spinning , dyeing and finishing technology and fiber recycling industry chain will play a key role.
In addition, the application of bio-based polyester fiber market continues to expand , the non -woven fabric technology advances , so that the overall cost of the non -woven fabric dropped significantly , but also the "cost " advantage of bio-based polyester fibers to show .
In the future , the industry needs to increase the bio-based polyester fibers - textile industry chain , "the official - Nissan - learning - research" cooperative efforts ; strengthen international exchanges and cooperation , and further develop , nurture and create innovative platforms ; big in a market economy background, balancing the interests of the industry chain coordination , better play in the economic and social benefits of the industrial chain ; emphasis on safety technology , the development of environmental technologies, standardization of technology and market development technologies.
Poly 3 - hydroxybutyric acid copolymer 4 - hydroxybutyrate
Research and technology modified fibroblasts
Professor of Textile and Materials Engineering, Dalian University of Technology Guo
PHA biomass are microbial fermentation polyester - renewable sources of raw materials ; easily degraded microorganisms in the environment after use ; physiologically compatible ; PHA has more than 150 kinds of monomers , the proportion of adjustable variety.
PHA diversity index , reflected in the performance of diversity : MW : 1000 ~ 1000000, Tg: -60 ℃ ~ 80 ℃, degree of crystallinity: 10% ~ 60% , elongation : 5% to 1000 % of water and air equivalent barrier PET, UV resistant .
PHA unlimited potential applications in the field of polymer can be used in bio- medical materials , packaging materials, high-performance in areas such as biological membranes , but its market share is not.
For PHA technology and R & D is currently facing the problem of insufficient economic advantages , such as high prices of raw materials , product performance is not ideal . To obtain a fiber material having a better performance , we also need to address several key issues, such as rheology theoretical guidance in the spinning technology to improve the molecular mobility of crystallization ; controlled degradation , increased melt strength.
Currently, Dalian University of joint -related agencies, the full application of functional fiber composite materials engineering and technology research center , Liaoning Province , Liaoning Province Key Laboratory of Materials Modification , platforms national engineering practice education center in seaweed modification and functionalization, modified krill protein and fiber-forming , chitin fibers , PET / PTT / PBT -side type composite fiber , PET / PBT composite fibers parallel aspects to promote the study of biomass synthetic fibers.
PTT and development prospects of PLA fiber
Shanghai Huayuan money to engineer a limited liability company hong
Biomass fiber , PTT fiber and PLA fiber is by far the best position to develop the breed . PTT fiber: 1,3-PDO fermentation domestic legal system in order to Klebsiella pneumoniae and its implementation process of fermentation using genetically modified engineered bacteria have an advantage with independent intellectual property ; This process will be accompanied by the development of the biodiesel industry increasingly obvious economic and environmental advantages .
PLA fibers : industrial raw fermented with lactic acid 1,3-PDO Industrial base is relatively superior , but the domestic chemical fiber production to provide the level of production L-LA is still low, the chemical purity of the product can not meet production requirements , production costs are biased high . China PLA direct spinning process is unique technology , the production of bonded fiber and get a good start on the application of sanitary materials .
Emphasis on the development of chemical engineering technology for the development of biomass fiber has a great role . Development of Chemical technology, the development of the current practice in the fibers of the raw material to establish the concept of " polymerization grade " raw material alcohol fermentation , raw materials to develop a standard for fiber production indicators of fermentation products contribute future development of enterprises .Washi tape
Meanwhile , attention to the development process of the reaction device. The current contribution of a great power in the 1,3-PDO , including L-LA is the development of enterprises in order to develop new means of genetically engineered bacteria engineering aspects . However, traditional fermentation and purification process through research and development as well as the corresponding device might more directly and effectively to improve the yield of biomass fermentation product alcohols . New and efficient aggregation devices are also worth serious R & D efforts .
Hong Sheng Technology Co., Ltd. Senior Engineer Feng Shuqin
1,3 - propanediol is an unsaturated polyester, epoxy resin , polyurethane resin is an important raw material ; in the food, pharmaceutical and cosmetic industry, widely used as a hygroscopic agent , antifreeze agents , lubricants and solvents ; glycol is also used as the tobacco moisturizing agents , antifungal agents, lubricants and food processing equipment, food marking ink solvents. As the main raw material of PTT fiber development of biomass , which may replace ethylene glycol, butylene glycol polyester polyol produced .Wholesale masking tape
1,3 - propanediol There are three main production methods : acrolein law , ethylene oxide method, microbial fermentation . Sheng Hong, Tsinghua University jointly developed Klebsiella glycerol fermentation.
Future use of biological engineering preparation of 1,3 - propanediol , PTT will make the price lower than the PBT and nylon. 3-PDO is important raw material for the production of PTT fiber and irreplaceable , so the development of PTT fiber industry 1,3-PDO will have a significant impact on market development . Moreover, in the past three years the most ,1,3-PDO applications is the pharmaceutical industry , which is mainly used to produce weight loss drug sibutramine and vitamin -H.
Currently a total capacity of 1,3-PDO product of 1.3 million tons / year , the next three years, the total capacity will reach 115,000 tons / year. The actual demand for 1,3-PDO products around 50,000 tons , the largest production capacity of domestic producers will remain at 50,000 tons .Masking tape
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