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ÏÈ˵Ã÷Ò»ÏÂÇé¿ö¡£Ë®Äý½º²ÄÁÏ£¬Ã»ÓмÓÈ뻯ѧ½»Áª¼Á£¬ÎÄÕÂÃû×ÖÓõ½ÁËmulti-physically cross-linking£¬¾ÍÊÇÔÚ¶àÌÇÔÚ¼ÓһЩÆäËû¶«Î÷£¬³£¹æ¶øÆ½Ó¹µÄÖÆ±¸£¨ÐÔÖʺÍÒѱ¨µÀµÄÏà±Èȷʵ²»ÊǺܺã©£¬¼ô¶ÏºóÊÒÎÂ×ÔÓúºÜÂý£¬ÐèÒª¸øÓèζȣ¨60¶È£©´Ì¼¤²ÅÄÜÌá¸ßËÙ¶È¡£¾ßÓÐ×Ô»Ö¸´£¬ÊÒÎÂһСʱ²»µ½Äָܻ´¡£2000%×óÓÒ¶ÏÁÑ¡£²»³öÒâÍ⣬Ͷ¸åºóËÍÉó£¬ËĸöÉó¸åÈË¡£
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In the preparation of hydrogel, the authors have described the use of APS. If I am not wrong, APS is a radical initiators in the polymerization of alkenes. It completely contradicts with their title, while "multi-physically cross-linking" is the major focus of this work. If a physically crosslinked polymer could be so stretchable, that would be really striking, if not revolutionary.
- I don¡¯t think that the authors can call the materials self-healing, just as not calling them "without any chemical cross-linkers". It is a covalent network, thus stretchable, but not self-healing. If such a stretchable material can be self-healing, that will be really extraordinary.
- The authors did not describe what is the chemical basis of their polymer design in the introduction, which is also reflected by the vague synthesis scheme of figure 1A. In my view, these are serious problems, thus I would not suggest its publication.

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Although the authors have removed "Multi-physically crosslinked" in the title, the description of "physical, non-covalent interactions" appears many times in the article. There is certainly physical non-covalent interaction in the gel, as in any polymer system, but it is the covalent bonds making it stretchable, which is the major focus of this work. Moreover, self-healing, as a rheological term, does not mean that you cut a piece into two and can put them together. Self-healing, in rheology, means that a broken network can reform, and should be characterized by Rheometers such as continuous step strain measurements. It is very unlikely that the covalent network can be self-healing. Moreover, even according to their definition of self-healing, I would not call a recovery of property at 60 degree after 24 hours as self-healing.
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I still think that most of the mechanical features of the materials are from the covalent network. The gel is also highly stretchable, while the improvement upon adding the Q component can also be achieved by tuning the SMA and AA ratio and concentration. The only benefit of adding gum is to improve the conductivity. However, the authors have not performed any thorough impedance measurements. £¨ÕûƪÎÄÕÂûÓÐÊ²Ã´Éæ¼°ºÍµçÏà¹ØµÄ¶«Î÷£¬Ö»²»¹ýÔÚ×îºó¼ÓÉÏÁËһЩwearable sensorµÄÄÚÈÝ£©
The new continuous step strain measurements, which were performed at 60 degree, in my opinion, prove that the stretchable material is NOT self-healing. (I assume that the same recovery could not be measured at room temperature). You cannot perform the stretching experiment at room temperature and the self-healing experiment at 60 degree, which are two different materials. Other people's misleading claims cannot be a justification.
ŪÀ´ÅªÈ¥¡£ÎÒ×Ô¼º¶¼ãÂÁË£¬²»ÖªµÀ¸ÃÈçºÎÈ¥Ó¦¸¶Õâ¸öÈË¡£ ÌØ±ðÊÇ¡°Other people's misleading claims cannot be a justification.¡±£¨¶¼ÊÇËøÖ¾¸Õ¡¢ÕÔÑ¡ºØÖ®ÀàµÄ´óÅ£¡£¡£¡££©Ö±½ÓÍÆ·­ÁËÕâ¸öÁìÓòµÄÒ»ÇС£¡£¡£ÉÏ´ÎÉó¸åÒâ¼ûÖÐдÁËÄÇô¶à£¬ËµÁËÄÇô¶à£¬µ½Í·À´»¹ÊÇ¡°I still think that most of the mechanical features of the materials are from the covalent network.¡±Õâ¶«Î÷£¬Á¬ÊµÑé¶¼²»ºÃÖ¤Ã÷¡£
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