24小时热门版块排行榜    

查看: 1065  |  回复: 1

yexuqing

木虫之王 (文学泰斗)

太阳系系主任

[交流] Stereomicrostructure-regulated biodegradable adhesives 已有1人参与

Stereomicrostructure-regulated biodegradable adhesives

立体微结构调节的可生物降解胶粘剂

▲ 作者:ZHEN ZHANG, ETHAN C. QUINN, JACOB K. KENNY, ALEXANDRA GRIGOROPOULOS, JASON S. DESVEAUX, TIFFANY CHEN, LI ZHOU, TING XU, GREGG T. BECKHAM, AND EUGENE Y.-X. CHEN

▲链接:

https://www.science.org/doi/10.1126/science.adr7175

▲摘要:

从胶带到胶水,粘合剂被广泛应用于各种场合。大多数是典型的石油基热固性网络或不可生物降解的热塑性热熔胶。研究者使用一组钇基、镧基和磷基催化剂合成了一系列具有不同分子量、微观结构和战术的聚合物——聚3-羟基丁酸酯(P3HBs)。

非晶聚合物往往更粘,但也更弱,而晶体聚合物在流动和填充表面不规则性方面很差,而这是形成强键的关键。研究者发现,半结晶的富二代P3HB不仅提供了最好的附着力,而且还优于许多商业替代品。由于P3HBs能够由细菌产生,并且可以生物降解,因此有可能以可持续的方式生产这些粘合剂。

▲ Abstract:

From tapes to glues, adhesives are used in a wide range of applications and situations. Most are typically petroleum-based thermoset networks or nonbiodegradable thermoplastic hot melts. Zhang et al. used a set of yttrium-, lanthanum-, and phosphorus-based catalysts to synthesize a series of poly(3-hydroxybutyrate) polymers (P3HBs) with different molecular weights, microstructures, and tacticities. Amorphous polymers tend to be stickier but also weaker, whereas crystalline ones are poor at flowing and filling surface irregularities, which is key to forming a strong bond. The authors found that semicrystalline syndio-rich P3HB not only provides the best adhesion, but can also outperform many commercial alternatives. Because P3HBs are able to be produced by bacteria and can be biodegradable, it may be possible to produce these adhesives in a sustainable way.
回复此楼
----
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

swily1419

新虫 (小有名气)

2楼2025-01-20 16:45:20
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
相关版块跳转 我要订阅楼主 yexuqing 的主题更新
普通表情 高级回复 (可上传附件)
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[考研] 一志愿北京化工大学材料与化工296分求调剂 +12 稻妻小编 2026-03-09 12/600 2026-03-10 22:50 by 星空星月
[考研] 材料工程307,求调剂 +6 我要燃烧你的梦 2026-03-08 6/300 2026-03-10 22:08 by peike
[考博] 读博申请 +4 感dd 2026-03-10 6/300 2026-03-10 17:01 by nxgogo
[考研] 求调剂 +4 yfihxh 2026-03-09 4/200 2026-03-10 16:50 by Pegasus0429
[考研] 0703求调剂 +3 jtyq001 2026-03-10 3/150 2026-03-10 16:45 by ztnimte
[考研] 311求调剂 +3 zchqwer 2026-03-10 3/150 2026-03-10 16:39 by 18595523086
[考研] 0856材料与化工309分求调剂 +4 ZyZy…… 2026-03-10 4/200 2026-03-10 15:20 by houyaoxu
[考研] 复试调剂 +6 呼呼?~+123456 2026-03-08 8/400 2026-03-10 11:36 by 呼呼?~+123456
[考研] 新疆大学地质与矿业工程学院招生 +24 another12 2026-03-04 32/1600 2026-03-10 01:15 by 1111--
[考博] 26年博士申请 +4 科研狗111 2026-03-07 4/200 2026-03-08 21:56 by 0611517sll
[考研] 0701-322 求调剂 +3 jiliuxian 2026-03-06 8/400 2026-03-08 19:31 by jiliuxian
[考研] 288求调剂 +5 好好- 2026-03-07 5/250 2026-03-08 18:22 by zzpnuli111
[考研] 0817化学工程与技术312分求调剂 +7 T123 tt 2026-03-04 7/350 2026-03-08 11:18 by 我的船我的海
[考研] 材料调剂 +7 ounce. 2026-03-05 15/750 2026-03-08 09:39 by wangjihu
[考研] 085701环境工程专业,初试305,均过国家A区线 +7 卡卡来了@ 2026-03-07 8/400 2026-03-08 06:40 by 刘兵
[考研] 0703化学求调剂学校 +3 一志愿京区211 2026-03-04 3/150 2026-03-07 21:35 by yinhuanshun
[考研] 哈尔滨理工大学2026年研究生调剂,材料科学与化学工程学院研究生调剂 +3 xinliu866 2026-03-06 3/150 2026-03-06 19:42 by 祁东原神
[考研] 085602高分子方向求调剂 +7 tlgudy 2026-03-04 7/350 2026-03-06 14:17 by guosr9609
[考研] 301求调剂 +4 李LJR 2026-03-04 4/200 2026-03-05 13:31 by Iveryant
[考研] 316求调剂 +3 林小星发大财 2026-03-04 3/150 2026-03-05 07:49 by bxbo
信息提示
请填处理意见