Flame retardant polyvinyl alcohol composite with excellent comprehensive properties prepared using Cu2O/chitosan and phosphorus-based flame retardants

阻燃剂 聚乙烯醇 壳聚糖 复合数 材料科学 复合材料 化学工程 化学 有机化学 工程类 冶金
作者
Wenzong Xu,Yi Zhang,Julan Liu,Ziyi Xuan,Lulu Su,Maotong Zhao
出处
期刊:Iranian Polymer Journal [Springer Science+Business Media]
标识
DOI:10.1007/s13726-024-01327-4
摘要

Polyvinyl alcohol (PVA) has good film-forming and barrier properties and can be used as packaging and biomedical materials, etc. However, PVA burns easily and is prone to melt dropping, limiting its wider application. In this study, Cu2O/Cs was prepared by coating chitosan (Cs) on the surface of cuprous oxide (Cu2O), and mixed with ammonium polyphosphate (APP) and phytic acid (PA) to prepare PVA composites. The results showed that the limiting oxygen index (LOI) value of the PVA composite with 8% (by weight) APP and 2% (by weight) Cu2O/Cs as flame retardants was 30.6%, which was 50.7% higher than that of pure PVA. Compared with pure PVA, its composite peak heat release rate (pHRR) was significantly reduced by 81.1%, and its total heat release rate (THR) was also markedly reduced by 67.7%, while its time to ignition (TTI) was increased by 41 s. The main reasons were that the gas generated by APP decomposition during heating reduced the concentration of combustible gas, the generated phosphorus-containing substances promoted the dehydration and carbonization of PVA, and Cu2O and chitosan (Cs) improved the compactness of the carbon layer. In particular, the incorporation of Cu2O/Cs improved the mechanical properties of our PVA composites compared with those containing only APP and PA. In short, the combination of Cu2O/Cs and phosphorus-based flame retardants improved the flame retardant performance of PVA at low additions while taking into account the mechanical properties. This is expected to expand the range of applications of PVA.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
2秒前
健忘曼冬发布了新的文献求助10
3秒前
猪猪发布了新的文献求助30
4秒前
大模型应助无限映波采纳,获得10
4秒前
4秒前
5秒前
6秒前
桐桐应助grace采纳,获得10
7秒前
7秒前
诺贝尔候选人完成签到 ,获得积分10
8秒前
556应助仲达采纳,获得10
8秒前
boshi发布了新的文献求助10
8秒前
小菜发布了新的文献求助10
9秒前
北风完成签到,获得积分10
12秒前
Serena510完成签到 ,获得积分10
12秒前
慕青应助欣慰的乌冬面采纳,获得10
13秒前
ding应助方仔采纳,获得10
14秒前
hhhh应助bliss采纳,获得20
14秒前
15秒前
大个应助苗条的辣辣采纳,获得10
15秒前
猪猪完成签到,获得积分10
16秒前
16秒前
研友_ngkEgn完成签到,获得积分10
16秒前
赘婿应助小菜采纳,获得10
16秒前
完美世界应助shinn采纳,获得30
18秒前
19秒前
LYSM应助一言矣采纳,获得10
19秒前
CC完成签到 ,获得积分10
19秒前
可靠的嫣然完成签到,获得积分10
19秒前
zys发布了新的文献求助30
19秒前
grace发布了新的文献求助10
20秒前
kkk发布了新的文献求助10
21秒前
英姑应助老迟到的沛萍采纳,获得10
21秒前
aaaaaa完成签到,获得积分10
21秒前
Janson完成签到,获得积分10
22秒前
ding应助英勇的人生采纳,获得10
23秒前
Orange应助哈哈采纳,获得10
24秒前
Nathan完成签到,获得积分10
24秒前
小菜完成签到,获得积分20
24秒前
Carrot发布了新的文献求助10
25秒前
高分求助中
Picture Books with Same-sex Parented Families: Unintentional Censorship 700
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
Effective Learning and Mental Wellbeing 300
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3975339
求助须知:如何正确求助?哪些是违规求助? 3519670
关于积分的说明 11199199
捐赠科研通 3256002
什么是DOI,文献DOI怎么找? 1798043
邀请新用户注册赠送积分活动 877386
科研通“疑难数据库(出版商)”最低求助积分说明 806305